PRIVILEGED AND CONFIDENTIAL — ATTORNEY WORK PRODUCT
CALDERWOOD & HARKNESS LLP 55 Bishopsgate London EC2N 3AH United Kingdom
MEMORANDUM
I. EXECUTIVE SUMMARY
This memorandum analyzes whether the tribunal to be constituted in ICSID Case No. ARB/22/11, Dunmore Energy Holdings Ltd. v. Republic of Valderia, will have jurisdiction over the claims asserted by Dunmore Energy Holdings Ltd. ("DEH" or the "Claimant") against the Republic of Valderia (the "Respondent" or "Valderia") and whether those claims are admissible. The analysis is based on the applicable provisions of the Convention on the Settlement of Investment Disputes Between States and Nationals of Other States (the "ICSID Convention"), the Agreement Between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of the Republic of Valderia for the Promotion and Protection of Investments, signed May 22, 2006 and entered into force November 1, 2006 (the "UK-Valderia BIT" or the "BIT"), the Request for Arbitration filed by DEH on March 15, 2022, and the factual record as presently understood by this firm.
Conclusion. We conclude that there is a strong basis for the tribunal to affirm jurisdiction over DEH's claim under all four jurisdictional requirements recognized in ICSID jurisprudence:
• Ratione personae — DEH is an exempted company incorporated under the laws of the Cayman Islands, a British Overseas Territory covered by the United Kingdom's territorial extension declaration of February 14, 2007, and thus qualifies as a "national of another Contracting State" within the meaning of Article 25(2)(b) of the ICSID Convention and the BIT's definition of "companies."
• Ratione materiae — DEH's investment in Valderia, comprising approximately USD 347 million in capital expenditure, a 30-year hydrocarbon concession, substantial physical infrastructure, and the equity of its wholly-owned Valderian subsidiary, constitutes a qualifying "investment" under both the BIT's broad asset-based definition and the objective criteria articulated by ICSID tribunals.
• Ratione voluntatis — Article 8 of the UK-Valderia BIT constitutes a standing offer of consent by the Republic of Valderia to submit investment disputes to ICSID arbitration, which DEH perfected by filing its Request for Arbitration on March 15, 2022.
• Ratione temporis — The BIT entered into force on November 1, 2006, and was extended to the Cayman Islands on February 14, 2007. Both DEH's investment (concession granted September 12, 2013) and the expropriatory measures (April–August 2021) post-date the relevant dates, and no temporal bar applies.
We further conclude that the claim is admissible, all procedural prerequisites having been satisfied. DEH delivered a formal Notice of Dispute to the Republic of Valderia on October 14, 2021, triggering the six-month cooling-off period prescribed by Article 8 of the BIT. Although the Request for Arbitration was filed approximately thirty days before the cooling-off period expired on April 14, 2022, the ICSID Secretary-General did not register the Request until April 8, 2022, and by the time the tribunal is constituted (proceedings having been dormant since June 2022), any arguable deficiency will have been fully cured. Under prevailing ICSID jurisprudence, this minor timing irregularity is non-fatal.
The Request for Arbitration was registered by the ICSID Secretary-General on April 8, 2022, and assigned Case No. ARB/22/11. Professor Ingrid Svensson (Swedish national, University of Uppsala) has been nominated as the Claimant's arbitrator. The Respondent has not yet nominated an arbitrator due to the dormancy of the proceedings.
This memorandum should be read in conjunction with the separate Memorandum on the Merits, which is expected to be circulated in April 2022, and the Quantum Memorandum, anticipated for May 2022. Together, these three memoranda will constitute the firm's comprehensive preliminary analysis of the Claimant's case.
We have identified a number of potential jurisdictional objections that the Respondent may raise, including challenges based on corporate nationality (the "shell company" argument), denial of benefits, alleged abuse of process or treaty shopping, the distinction between treaty and contract claims, and the relevance of PetroValderia S.A.'s pre-existing carried interest. As set forth in detail in Part V below, we assess each of these potential objections as weak to moderate in strength and surmountable on the facts and applicable jurisprudence. We recommend that the team proceed with confidence that the tribunal will affirm jurisdiction and that a comprehensive Memorial on Jurisdiction be prepared for filing once the proceedings are reactivated.
II. BACKGROUND FACTS
The following factual summary is based on information provided by the Claimant, documents in the firm's possession, and publicly available information. All facts remain subject to verification and may be supplemented as the evidentiary record develops.
A. The Claimant — Dunmore Energy Holdings Ltd.
The Claimant is Dunmore Energy Holdings Ltd. ("DEH"), an exempted company incorporated under the laws of the Cayman Islands, with its registered office at 4th Floor, Harbour Place, 103 South Church Street, George Town, Grand Cayman KY1-1002, Cayman Islands. DEH maintains its principal business office at 27 Curzon Street, London W1J 5HT, United Kingdom, from which its senior management directs the company's global operations and investment activities.
DEH operates in the oil and gas exploration, production, and renewable energy development sectors. The company was founded by Sir Malcolm Dunmore, KBE, a British national and a well-known figure in the independent upstream exploration and production industry, who had previously built and sold two mid-cap exploration companies prior to establishing DEH. The company has pursued a strategy of acquiring and developing hydrocarbon assets in jurisdictions with significant untapped resource potential, with the Valderian concession representing its flagship asset.
The ownership structure of DEH, as of the date of the events giving rise to this dispute and as of the present date, is as follows:
Accordingly, 74% of DEH's equity is held directly by British nationals (Sir Malcolm Dunmore, Ms. Nandakumar, and Mr. Rearden), while 26% is held by a Cayman Islands limited partnership managed by a Delaware-based fund manager. This ownership profile is significant for purposes of the ratione personae analysis set forth in Part III.B below, as it demonstrates that DEH is not only incorporated in a British Overseas Territory but is also predominantly owned and controlled by British nationals.
DEH's corporate auditors are Ashworth & Palliser LLP, a London-based accounting firm. The company maintains audited financial statements for all relevant fiscal years, which will be made available in the arbitral proceedings as needed.
B. The Valderian Subsidiary — Dunmore Valderia upstream S.A.
DEH conducted its Valderian operations through its wholly-owned local subsidiary, Dunmore Valderia upstream S.A. ("DVU"), a Sociedad Anónima incorporated under the laws of the Republic of Valderia. DVU's registered office is located at Avenida Libertador 1480, Piso 12, Puerto Valdés, Valderia.
DVU is 100% owned by DEH. DVU was the named concessionaire under Concession No. HYD-2012-047, the hydrocarbon concession at the center of this dispute. All operational activities in Valderia — including the drilling of exploration and development wells, the construction and operation of surface infrastructure, and the production and sale of hydrocarbons — were carried out by DVU under the direction and with the financial support of DEH. DEH capitalized DVU through a combination of equity contributions and intercompany loans, channeling all capital expenditure into the Valderian operations through DVU.
The use of a local operating subsidiary is standard practice in international upstream oil and gas operations and reflects both regulatory requirements under Valderian law (which require that the named concessionaire be a company incorporated in Valderia) and sound commercial structuring. DVU had no independent investment decision-making authority; all material decisions regarding the concession, including the approval of work programs, capital budgets, and financing arrangements, were made by DEH's board and senior management in London.
C. The Concession
The central asset underlying DEH's investment in Valderia is the hydrocarbon concession known as Bloque Orinoco Sur (Block Orinoco South), designated as Concession No. HYD-2012-047. The concession was granted under the Valderian Hydrocarbons Law of 2009 (Ley de Hidrocarburos de 2009) by the Ministry of Energy and Natural Resources of the Republic of Valderia (the "Ministry of Energy").
The key terms of the concession are as follows:
The concession area is situated in the onshore Orinoco Basin of Valderia, a region with proven hydrocarbon prospectivity. The concession was awarded following a competitive licensing round conducted by the Ministry of Energy in 2012, in which DVU was selected as the preferred bidder based on its technical qualifications, proposed work program, and financial capacity — all of which were underwritten by DEH.
PetroValderia S.A., the 100% state-owned national oil company of the Republic of Valderia, held a 10% carried interest in the concession under the original concession terms. This carried interest was a standard feature of Valderian hydrocarbon concessions, entitling PetroValderia to a 10% share of production revenues without an obligation to fund a corresponding share of capital expenditure. PetroValderia's role under the concession was that of a minority non-operating interest holder; operational control and management authority rested exclusively with DVU as the named concessionaire and operator.
D. DEH's Investment in Valderia
DEH's investment in Valderia represents a substantial, long-term commitment of financial and human capital to the exploration, development, and production of hydrocarbons in the Bloque Orinoco Sur concession area. The investment was made over a period of approximately eight years, from 2013 to 2021, and comprised the following principal components:
Total Capital Expenditure (2014–2021): Approximately USD 347 million, broken down as follows:
• Exploration and development drilling: USD 211 million. This expenditure funded the drilling of seven exploration wells during the 2013–2016 exploration phase (of which five proved commercially viable) and twenty-two development wells during the 2016–2019 development phase. The drilling program was managed by DVU under the technical supervision of DEH's London-based geoscience and engineering teams.
• Surface infrastructure and pipeline construction: USD 89 million. This expenditure funded the construction of the Central Processing Facility ("CPF") at Orinoco Sur, with a designed processing capacity of 35,000 barrels of oil per day, and a 68-kilometer gathering pipeline system connecting the producing wells to the CPF and onward to the national pipeline network. The CPF and pipeline represented critical enabling infrastructure for the commercialization of the concession's hydrocarbon resources.
• Seismic acquisition and geological studies: USD 47 million. This expenditure funded the acquisition of 3D seismic data over approximately 800 square kilometers of the concession area, as well as related geological and geophysical studies, reservoir modeling, and subsurface analysis. These activities were essential to identifying and delineating prospective drilling targets and optimizing the development plan.
Operational Phases. The investment progressed through three distinct operational phases:
1. Exploration Phase (2013–2016): DVU drilled seven exploration wells, of which five were found to be commercially viable. The exploration program confirmed the presence of significant hydrocarbon accumulations in the Orinoco Sur concession area and provided the technical basis for proceeding to the development phase.
2. Development Phase (2016–2019): DVU drilled twenty-two development wells and constructed the CPF and gathering pipeline system. The development phase brought the concession from an exploration asset to a producing asset capable of generating substantial revenue.
3. Production Phase (2019–2021): Commercial production commenced in 2019 and continued until the Respondent's expropriatory measures in 2021 brought operations to a halt.
Reserves. As of December 31, 2020, the Bloque Orinoco Sur concession held proved reserves of 87.4 million barrels of oil equivalent ("mmboe") and probable reserves of 42.1 mmboe, as certified by Ridgewell Subsurface Consultants Ltd., an independent petroleum engineering consultancy.
Financial Performance (FY2020). In the fiscal year ending December 31, 2020, DVU generated gross revenue of USD 128.6 million and EBITDA of USD 41.3 million. Peak production of 24,800 barrels per day was achieved in September 2020, with average daily production for the year of approximately 21,200 barrels per day. At the time of the expropriation in May 2021, production was running at approximately 18,600 barrels per day.
Project Finance. The development of the Bloque Orinoco Sur concession was partially financed through a USD 175 million senior secured credit facility extended by Commonwealth Capital Bank plc (London) on March 20, 2016. The facility was secured against the concession assets and DVU's revenue streams. At the time of the expropriation, the outstanding principal under the facility was USD 112,400,000, bearing interest at SOFR plus 4.25% per annum. The expropriation triggered events of default under the facility, and the outstanding balance remains a component of the Claimant's quantum claim.
E. The Expropriation
The expropriatory measures taken by the Republic of Valderia against DEH's investment unfolded over a period of approximately eight months, from January 2020 to September 2021, and involved a coordinated series of executive, legislative, and administrative actions. The key events are summarized chronologically below:
January 15, 2020 — Inauguration of President Héctor Luján Montalvo. President Luján Montalvo assumed office following a presidential election campaign in which he ran on a platform of "resource sovereignty" (soberanía de los recursos), pledging to reassert state control over Valderia's hydrocarbon sector and renegotiate or terminate concessions held by foreign companies. While the new president's campaign rhetoric raised concerns among foreign investors, including DEH, no concrete measures were taken in the immediate aftermath of the inauguration.
March 2, 2021 — Ministry of Energy "Notice of Review." The Ministry of Energy, under the direction of Minister Claudia Ríos Salazar, issued a formal "Notice of Review" (Aviso de Revisión) addressed to all foreign-held hydrocarbon concessionaires operating in Valderia. The Notice stated that the Ministry would conduct a comprehensive review of the terms of all foreign-held concessions "in the national interest" and instructed concessionaires to submit specified operational and financial data within sixty days. DVU complied with the Notice and submitted the requested data.
April 17, 2021 — Presidential Decree No. 2021-0417 ("Decree on the Nationalization of Strategic Hydrocarbon Assets"). President Luján Montalvo issued Presidential Decree No. 2021-0417, titled Decreto sobre la Nacionalización de Activos Hidrocarburíferos Estratégicos. The Decree declared all hydrocarbon concessions held by foreign-controlled entities to be "strategic national assets" subject to immediate nationalization in the public interest. The Decree authorized the Ministry of Energy and PetroValderia S.A. to take all steps necessary to assume control of the affected concessions. The Decree did not provide for compensation to the affected concessionaires.
May 3, 2021 — Physical Occupation of CPF Orinoco Sur. Valderian military personnel, accompanied by officers and employees of PetroValderia S.A., physically occupied the Central Processing Facility at Orinoco Sur. DVU personnel were denied access to the facility and to all associated infrastructure, including the gathering pipeline system and producing wellsites. From this date forward, DVU was unable to conduct any operations in the concession area. The occupation was carried out without prior notice to DVU or DEH and without judicial authorization.
June 23, 2021 — Presidential Decree No. 2021-0623 ("Decree on the Transfer of Concession Rights to PetroValderia S.A."). President Luján Montalvo issued Presidential Decree No. 2021-0623, formally transferring all rights under Concession No. HYD-2012-047 from DVU to PetroValderia S.A. The Decree purported to extinguish all of DVU's rights and interests under the concession, including its rights to produce and sell hydrocarbons, its ownership of infrastructure and equipment, and its right to the remaining term of the concession. No compensation was offered or provided.
August 5, 2021 — Ministerial Resolution No. MEN-2021-089. The Ministry of Energy issued Ministerial Resolution No. MEN-2021-089, revoking DVU's operating licenses and permits, including its environmental operating permit and its wellbore completion authorizations. The revocation was effected without prior notice, without a hearing, and without compensation. The Resolution stated that the revocation was "consistent with the national interest as determined by Presidential Decree No. 2021-0417."
September 1, 2021 — Freezing of DVU's Bank Accounts. The Attorney General of the Republic of Valderia, Dr. Renata Villamizar Ochoa, ordered the freezing of all bank accounts held by DVU at Banco Nacional de Valderia. The frozen accounts contained approximately USD 14.7 million in operational funds and receivables. The freezing order was issued without judicial oversight and without compensation.
At no stage did the Republic of Valderia offer or pay any compensation to DEH or DVU for the taking of the concession, the seizure of physical assets, the transfer of concession rights to PetroValderia, or the freezing of DVU's bank accounts. The totality of these measures constitutes a direct and unlawful expropriation of DEH's investment in violation of Article 5 of the UK-Valderia BIT.
F. Pre-Arbitration Steps
DEH took the following steps prior to the commencement of arbitration:
October 14, 2021 — Notice of Dispute. DEH, acting through Calderwood & Harkness LLP, delivered a formal Notice of Dispute to the Republic of Valderia, addressed to Ambassador Diego Fuentes Castillo, Minister of Foreign Affairs, and Dr. Renata Villamizar Ochoa, Attorney General. The Notice was delivered by courier and by diplomatic channel through the Valderian Embassy in London. The Notice invoked Article 8 of the UK-Valderia BIT, identified DEH as the investor and the investment, described the dispute and the measures complained of, specified the BIT provisions alleged to have been breached (Articles 3 and 5), and stated DEH's intention to submit the dispute to ICSID arbitration if the dispute was not resolved amicably within the six-month cooling-off period prescribed by Article 8. The delivery of the Notice triggered the running of the six-month cooling-off period.
October 14, 2021 – April 14, 2022 — Cooling-Off Period. The six-month cooling-off period ran from October 14, 2021 to April 14, 2022. During this period, the Republic of Valderia did not respond substantively to the Notice of Dispute, did not propose or engage in settlement negotiations, and did not offer any form of compensation. The dispute remained unresolved at the expiry of the cooling-off period.
March 15, 2022 — Filing of Request for Arbitration. DEH filed its Request for Arbitration with the International Centre for Settlement of Investment Disputes (ICSID) in Washington, D.C. The Request was filed approximately thirty days before the expiry of the six-month cooling-off period. The implications of this timing are discussed in Part IV.A below.
April 8, 2022 — Registration of Request for Arbitration. The ICSID Secretary-General registered the Request for Arbitration and assigned the case number ARB/22/11. Registration occurred six days before the expiry of the cooling-off period on April 14, 2022.
G. The Respondent
The Respondent is the Republic of Valderia, a unitary presidential republic situated in the Caribbean basin, with its capital at Puerto Valdés. Valderia is a Contracting State to the ICSID Convention and a party to the UK-Valderia BIT.
Valderia's external legal representation in this matter is provided by Ortega & Bernal, Abogados (Puerto Valdés), led by Dr. Alejandro Bernal Quiroga, and Harcastle Fenton LLP (London, Paris, and Washington, D.C.), led by Charles Winterbottom QC. We understand that Harcastle Fenton will serve as lead international counsel for the Respondent. The Respondent's quantum expert is Northbridge Economic Consulting Ltd., led by Dr. Henrik Johansson.
PetroValderia S.A. is the 100% state-owned national oil company of the Republic of Valderia. PetroValderia assumed operational control of the Bloque Orinoco Sur concession assets following the expropriation and is currently operating the concession. PetroValderia is not a party to the arbitration, but its actions in occupying the CPF and assuming control of the concession are attributable to the Republic of Valderia under principles of state responsibility.
III. JURISDICTIONAL ANALYSIS
A. Article 25(1) of the ICSID Convention — Framework
Article 25(1) of the ICSID Convention establishes the jurisdictional requirements for access to the Centre. It provides, in relevant part:
"The jurisdiction of the Centre shall extend to any legal dispute arising directly out of an investment, between a Contracting State (or any constituent subdivision or agency of a Contracting State designated to the Centre by that State) and a national of another Contracting State, which the parties to the dispute consent in writing to submit to the Centre. When the parties have given their consent, no party may withdraw its consent unilaterally."
Three cumulative requirements must be satisfied for the Centre to exercise jurisdiction: (1) the dispute must be a "legal dispute arising directly out of an investment" (ratione materiae); (2) the dispute must be between "a Contracting State . . . and a national of another Contracting State" (ratione personae); and (3) the parties must have "consent[ed] in writing to submit [the dispute] to the Centre" (ratione voluntatis). In addition, although not expressly stated in Article 25(1), ICSID tribunals have recognized a temporal dimension (ratione temporis), requiring that the applicable investment treaty or consent instrument was in force at the relevant times.
As a threshold matter, we note that both relevant states are Contracting States to the ICSID Convention. The United Kingdom of Great Britain and Northern Ireland signed the ICSID Convention on May 26, 1965, and deposited its instrument of ratification on January 19, 1967. The Convention entered into force for the United Kingdom on February 18, 1967. The United Kingdom has extended the Convention to the Cayman Islands as a British Overseas Territory. The Republic of Valderia signed the ICSID Convention and deposited its instrument of ratification in circumstances that are not contested; Valderia is a Contracting State in good standing. Accordingly, the basic requirement that the dispute involve a Contracting State and a national of another Contracting State is capable of being satisfied, subject to the detailed analysis below.
B. Jurisdiction Ratione Personae — Nationality of the Claimant
1. DEH's Nationality: Cayman Islands / United Kingdom
Article 25(2)(b) of the ICSID Convention defines "national of another Contracting State" to include "any juridical person which had the nationality of a Contracting State other than the State party to the dispute on the date on which the parties consented to submit such dispute to conciliation or arbitration." The nationality of a juridical person is typically determined by its place of incorporation or the seat of its registered office, subject to the applicable investment treaty.
DEH is an exempted company incorporated under the laws of the Cayman Islands. The Cayman Islands is a British Overseas Territory, falling within the constitutional framework of the United Kingdom for purposes of international treaty obligations, including the ICSID Convention and bilateral investment treaties.
Article 1 of the UK-Valderia BIT defines "companies" to include, inter alia, "any body corporate, firm or association incorporated or constituted under the law in force in any part of the United Kingdom or in any territory to which this Agreement is extended in accordance with the provisions of Article 12." Article 12 of the BIT provides for territorial extension by declaration of the United Kingdom.
On February 14, 2007, the United Kingdom made a territorial extension declaration pursuant to Article 12 of the BIT, extending the UK-Valderia BIT to British Overseas Territories, including the Cayman Islands. This declaration was duly notified to the Republic of Valderia in accordance with the BIT's provisions. Accordingly, from February 14, 2007 onward, the BIT has applied to investments made by companies incorporated in the Cayman Islands.
DEH was incorporated in the Cayman Islands prior to the grant of the concession (September 12, 2013) and prior to the commencement of the dispute. It therefore qualifies as a "company" within the BIT's definition and, consequently, as a "national of another Contracting State" for purposes of Article 25(2)(b) of the ICSID Convention. The Cayman Islands' status as a British Overseas Territory and the existence of the territorial extension declaration are determinative on this point.
2. Analysis of Ultimate Beneficial Ownership
Although the place-of-incorporation test is the primary criterion for establishing the nationality of a juridical person under both the ICSID Convention and the BIT, we anticipate that the Respondent may seek to challenge DEH's nationality by looking beyond its place of incorporation to the nationality of its ultimate beneficial owners. This anticipated objection is addressed in detail in Part V.A below. For present purposes, we note that even if the tribunal were to look through DEH to its ultimate beneficial owners, the result would reinforce rather than undermine the Claimant's case on ratione personae.
The ultimate beneficial ownership of DEH is as follows: Sir Malcolm Dunmore, KBE (British national) holds 62% through the Dunmore Family Trust; Priya Nandakumar (dual British-Indian national) holds 8%; and Thomas Rearden (British national) holds 4%. Together, British nationals hold 74% of DEH's equity. The remaining 26% is held by Meridian Growth Partners Fund III, L.P., a Cayman Islands limited partnership managed by Meridian Growth Partners LLC, a Delaware-based private equity firm. Even the Meridian interest, therefore, is domiciled in a British Overseas Territory at the entity level.
ICSID jurisprudence has established that tribunals generally apply the place-of-incorporation test to determine the nationality of corporate claimants, consistent with the broad and straightforward approach adopted by most bilateral investment treaties. Piercing the corporate veil to look through to the ultimate beneficial owners is an exceptional measure, typically reserved for cases involving fraud, abuse of process, or situations where the corporate form is a sham designed to manufacture jurisdiction. As the tribunal held in Tokios Tokelés v. Ukraine (ICSID Case No. ARB/02/18), the place-of-incorporation test should be applied unless there are compelling reasons to depart from it, and the mere fact that the ultimate beneficial owners of a corporate claimant are nationals of a third state (which is not even the case here) does not, without more, warrant piercing the veil. Similarly, in Saluka Investments B.V. v. Czech Republic, the tribunal confirmed that the nationality of a corporate investor is determined by reference to the applicable treaty definition, which in most BITs employs an incorporation test.
In the present case, there is no basis for piercing DEH's corporate veil. DEH is not a sham entity; it is a genuine operating holding company with substantial economic activity and management conducted from its London offices. Even if the veil were pierced, the predominant nationality of the beneficial owners is British — the very nationality that gives rise to the BIT claim. The ratione personae requirement is thus satisfied with considerable margin.
Conclusion: DEH satisfies the ratione personae requirement by virtue of its incorporation in the Cayman Islands, a British Overseas Territory covered by the UK's territorial extension declaration of February 14, 2007. The Claimant's standing as a "national of another Contracting State" is clear and well-supported.
C. Jurisdiction Ratione Materiae — Existence of a Qualifying Investment
1. Definition of "Investment" Under the BIT
Article 1 of the UK-Valderia BIT defines "investment" in broad, inclusive, and asset-based terms. Consistent with the standard formulation found in the United Kingdom's model BIT, Article 1 provides that "investment" means "every kind of asset," and includes without limitation:
(a) movable and immovable property and any other property rights such as mortgages, liens or pledges;
(b) shares in and stock and debentures of a company and any other form of participation in a company;
(c) claims to money or to any performance under contract having a financial value;
(d) intellectual property rights, goodwill, technical processes and know-how;
(e) business concessions conferred by law or under contract, including concessions to search for, cultivate, extract, or exploit natural resources.
DEH's investment in Valderia encompasses all five categories of the BIT's illustrative list:
• Shares (Article 1(b)): DEH holds 100% of the shares of DVU, a Valderian Sociedad Anónima. This equity interest constitutes an "investment" in the form of "shares in . . . a company."
• Business concession (Article 1(e)): Concession No. HYD-2012-047, a 30-year hydrocarbon concession to explore, develop, and produce hydrocarbons in the Bloque Orinoco Sur, constitutes a "business concession conferred by law" and specifically a "concession to search for, cultivate, extract, or exploit natural resources."
• Movable and immovable property (Article 1(a)): The physical infrastructure constructed by DVU in the concession area — including the Central Processing Facility, the 68-kilometer gathering pipeline, the twenty-nine wells (seven exploration and twenty-two development), and associated equipment — constitutes movable and immovable property.
• Claims to money (Article 1(c)): DVU's receivables, revenues from production, and claims under the project finance facility with Commonwealth Capital Bank plc constitute "claims to money or to any performance under contract having a financial value."
• intellectual property and know-how (Article 1(d)): The 3D seismic data, geological and geophysical studies, reservoir models, and associated technical know-how developed in connection with the concession constitute "Intellectual property rights, goodwill, technical processes and know-how."
The breadth and depth of DEH's investment across all five categories of the BIT's definition leave no room for doubt that a qualifying "investment" exists for purposes of ratione materiae.
2. The "Salini" / Objective Criteria Test
Even if the tribunal were to apply the more restrictive "Salini" test — derived from the decision of the ICSID tribunal in Salini Costruttori S.p.A. v. Kingdom of Morocco (ICSID Case No. ARB/00/4) — which identifies four objective criteria that an investment must satisfy (contribution, duration, risk, and contribution to the economic development of the host state), DEH's investment would comfortably meet all four criteria. We note that the application of the Salini test in the context of a BIT with a broad, asset-based definition of investment remains debatable in ICSID jurisprudence, with several tribunals declining to impose additional requirements beyond those contained in the applicable treaty. Nevertheless, even under the Salini framework, the investment at issue satisfies each criterion:
Contribution. DEH made a total capital contribution of approximately USD 347 million over the period from 2014 to 2021. This contribution was made in the form of equity injected into DVU, intercompany loans, and direct expenditure on drilling, construction, and seismic acquisition. The scale of this contribution — nearly USD 350 million over an eight-year period — is by any measure substantial and well exceeds the threshold recognized in ICSID jurisprudence. In addition to financial contributions, DEH contributed significant human capital, technical expertise, and managerial know-how to the development of the concession.
Duration. DEH's investment was made over a period of approximately eight years (2013–2021), with the concession itself having a term of thirty years (September 12, 2013 to September 12, 2043). The long-term nature of the commitment is characteristic of upstream oil and gas investments, which require extended periods for exploration, appraisal, development, and production. Tribunals have generally accepted that investments spanning several years satisfy the duration criterion. In Jan de Nul N.V. and Dredging International N.V. v. Arab Republic of Egypt (ICSID Case No. ARB/04/13), the tribunal considered a two-year investment sufficient; DEH's eight-year track record with a thirty-year concession term far exceeds any minimum threshold.
Risk. The investment carried significant commercial and political risk. Upstream oil and gas exploration is inherently risky: of the seven exploration wells drilled, two were unsuccessful, representing a dry-hole risk that is a hallmark of the industry. The investment was exposed to commodity price risk, geological risk, operational risk, and — as events proved — political risk. The materialization of political risk through the Respondent's expropriatory measures is, in itself, evidence that the investment bore risk of a magnitude and character consistent with the Salini criterion. Tribunals have consistently recognized that the risk element of the Salini test is satisfied where the investment is exposed to the kind of uncertainties inherent in long-term commercial ventures in the host state.
Contribution to the Economic Development of the Host State. DEH's investment made a substantial contribution to the economic development of Valderia. The concession generated royalty payments to the Valderian government at a rate of 12.5% of gross production value, as well as corporate income tax revenues at a rate of 34%. In FY2020 alone, gross revenues of USD 128.6 million imply royalty payments of approximately USD 16.1 million and significant tax revenues. In addition, the investment created direct and indirect employment for Valderian nationals, built critical energy infrastructure (the CPF and the 68-kilometer pipeline), contributed to Valderia's energy security and self-sufficiency, and facilitated technology and skills transfer to the local workforce. While some tribunals have questioned whether "contribution to the economic development of the host state" is a separate jurisdictional requirement or merely a consequence of any legitimate investment, even under the more rigorous view, DEH's investment satisfies this criterion with ease.
3. DEH's Investment Through DVU
An important structural feature of DEH's investment is that it was made through DVU, the wholly-owned Valderian subsidiary. The question arises whether DEH, as the foreign parent company, has standing to bring a claim in respect of an investment held through a local subsidiary.
ICSID jurisprudence has addressed this question extensively, and the prevailing approach is permissive. Tribunals have consistently recognized that a foreign parent company has standing to bring a claim under a bilateral investment treaty in respect of investments made through a locally-incorporated subsidiary, provided that the parent is the ultimate owner and controller of the investment. In Enron Corporation and Ponderosa Assets, L.P. v. Argentine Republic (ICSID Case No. ARB/01/3), the tribunal held that shareholders of locally-incorporated companies may bring claims under BITs where their investment in the local company constitutes a protected investment under the applicable treaty. Similarly, in CMS Gas Transmission Company v. Argentine Republic (ICSID Case No. ARB/01/8), the tribunal upheld the standing of a minority shareholder in a locally-incorporated company to bring a treaty claim in respect of its shareholding.
In the present case, DEH's position is even stronger than that of the claimants in Enron and CMS, as DEH holds 100% of DVU and exercised full operational and strategic control over DVU's activities. DEH capitalized DVU, directed all investment decisions, and bore the economic risk of the Valderian operations. The fact that DVU was the named concessionaire under Valderian law does not diminish DEH's status as the protected investor under the BIT; the use of a local subsidiary was required by Valderian law and is standard international practice.
It is also important to note that DVU, as a company incorporated in Valderia, is a national of the host state and therefore cannot itself bring a claim against Valderia under the ICSID Convention (absent an agreement between the parties to treat DVU as a national of DEH's state under Article 25(2)(b)). DEH is therefore the proper — and indeed the only — claimant capable of advancing the treaty claim.
Conclusion: DEH's investment, made through DVU and comprising the totality of the assets described above, constitutes a qualifying "investment" under both the BIT's broad asset-based definition and, if applicable, the Salini criteria. The ratione materiae requirement is clearly satisfied.
D. Jurisdiction Ratione Voluntatis — Consent to Arbitration
1. The Respondent's Standing Offer of Consent
Article 8 of the UK-Valderia BIT provides for the resolution of investment disputes between a Contracting Party and a national of the other Contracting Party. Article 8 provides, in relevant part, that an investor may, after complying with the procedural prerequisites set forth therein (including the six-month cooling-off period), submit the dispute to arbitration under the ICSID Convention, provided that both the host state and the investor's home state are Contracting States to the ICSID Convention.
Under established ICSID jurisprudence, a provision in a bilateral investment treaty offering arbitration to qualifying investors constitutes a "standing offer" of consent by the host state to submit covered disputes to ICSID jurisdiction. This standing offer remains open to acceptance by any qualifying investor who satisfies the conditions set forth in the treaty. As the tribunal held in AAPL v. Sri Lanka (ICSID Case No. ARB/87/3) — the seminal case on BIT-based consent — and as confirmed in countless subsequent decisions, the host state's consent is deemed given upon the treaty's entry into force and remains effective unless and until the treaty is terminated in accordance with its own provisions.
Article 8 of the UK-Valderia BIT constitutes precisely such a standing offer. The Republic of Valderia, by entering into the BIT and including Article 8, consented in advance to the submission of qualifying investment disputes to ICSID arbitration. This consent is irrevocable under Article 25(1) of the ICSID Convention once accepted by the investor.
2. Scope of Consent
The scope of the Respondent's consent under Article 8 extends to disputes "concerning an investment" between a Contracting Party and a national of the other Contracting Party. The formulation "concerning an investment" is broad and encompasses any dispute that has a sufficient connection to the investor's protected investment. There is no carve-out, limitation, or reservation in Article 8 that would restrict the scope of covered disputes to particular categories of claims or exclude the types of claims asserted by DEH.
DEH's claims in the present case arise from the Respondent's alleged violations of the BIT's substantive protections, specifically:
• Article 5 (Expropriation): DEH alleges that the Respondent's measures — including the nationalization decrees, the physical seizure of the CPF, the transfer of concession rights to PetroValderia, the revocation of operating licenses, and the freezing of bank accounts — constitute a direct expropriation of DEH's investment without compensation, in violation of Article 5 of the BIT.
• Article 3 (Fair and Equitable Treatment; Full Protection and Security): DEH alleges that the Respondent's conduct violated the obligation to accord fair and equitable treatment to the investment and the obligation to provide full protection and security, as guaranteed by Article 3 of the BIT.
These claims are quintessential treaty claims falling squarely within the scope of "disputes concerning an investment" as contemplated by Article 8. There is no basis for the Respondent to contend that these claims fall outside the scope of its consent.
3. The BIT's Entry Into Force and Territorial Extension
The perfection of consent in the present case depends on the BIT having been in force at the relevant time and having been applicable to investors from the Cayman Islands. Both conditions are satisfied:
• The UK-Valderia BIT was signed on May 22, 2006 and entered into force on November 1, 2006.
• The United Kingdom's territorial extension declaration of February 14, 2007 extended the BIT to British Overseas Territories, including the Cayman Islands.
DEH accepted the Respondent's standing offer of consent by filing its Request for Arbitration with ICSID on March 15, 2022. Upon the filing of the Request, written consent within the meaning of Article 25(1) of the ICSID Convention was perfected. The consent is irrevocable and binding on both parties.
Conclusion: The ratione voluntatis requirement is satisfied. Article 8 of the UK-Valderia BIT constitutes a standing offer of consent by the Republic of Valderia, which DEH accepted by filing its Request for Arbitration.
E. Jurisdiction Ratione Temporis
The temporal dimension of jurisdiction requires that the applicable treaty was in force at the time of the investment and at the time of the events giving rise to the dispute. In the present case, the relevant dates are as follows:
The concession was granted on September 12, 2013, more than six years after the BIT's territorial extension to the Cayman Islands on February 14, 2007. The expropriatory measures occurred in April–September 2021, more than fourteen years after the territorial extension. The BIT was in force throughout the entire period of DEH's investment and throughout the period during which the expropriatory measures were taken. There is accordingly no issue of temporal jurisdiction.
The BIT has not been terminated and remains in full force and effect. No sunset or limitation period that would bar DEH's claims has been identified. The Request for Arbitration was filed within a reasonable period after the expropriatory measures and well within any applicable limitation period.
Conclusion: The ratione temporis requirement is fully satisfied. No temporal bar applies to DEH's claims.
IV. ADMISSIBILITY
Distinct from the question of jurisdiction, the admissibility of a claim concerns whether the procedural prerequisites for the exercise of an otherwise-established jurisdiction have been satisfied. The principal admissibility issues in the present case are: (A) compliance with the cooling-off period; (B) the absence of parallel proceedings; (C) the absence of a requirement to exhaust local remedies; and (D) compliance with notice requirements.
A. Compliance with the Cooling-Off Period
Article 8 of the UK-Valderia BIT requires that, before an investor may submit a dispute to ICSID arbitration, it must provide written notice of the dispute to the host state, following which a six-month "cooling-off" period must elapse to allow the parties an opportunity to resolve the dispute amicably. Only if the dispute remains unresolved at the expiry of this period may the investor proceed to arbitration.
Factual Chronology. DEH delivered its formal Notice of Dispute to the Republic of Valderia on October 14, 2021. The Notice was addressed to Ambassador Diego Fuentes Castillo, Minister of Foreign Affairs, and Dr. Renata Villamizar Ochoa, Attorney General of the Republic of Valderia, and was delivered by international courier and through diplomatic channels. The six-month cooling-off period commenced on October 14, 2021 and expired on April 14, 2022.
The Request for Arbitration was filed with ICSID on March 15, 2022 — approximately thirty days before the expiry of the cooling-off period. The ICSID Secretary-General registered the Request on April 8, 2022 — six days before the cooling-off period expired.
Analysis. The fact that the Request for Arbitration was filed before the expiry of the cooling-off period raises a potential admissibility issue. The question is whether this premature filing renders the claim inadmissible or whether the deficiency is curable.
ICSID jurisprudence is not uniform on this point, but the weight of authority supports the conclusion that the cooling-off period is a procedural requirement rather than a jurisdictional prerequisite, and that minor non-compliance is not fatal to the admissibility of the claim, particularly where no prejudice to the respondent has resulted. In Ethyl Corporation v. Government of Canada (UNCITRAL), the tribunal held that a premature filing could be cured by the passage of time and that the cooling-off period should not be elevated to an absolute jurisdictional bar. The tribunal in Bayindir Insaat Turizm Ticaret Ve Sanayi A.Ş. v. Islamic Republic of Pakistan (ICSID Case No. ARB/03/29) similarly treated the waiting period as a procedural step that does not deprive the tribunal of jurisdiction when the period has been substantially respected. In SGS Société Générale de Surveillance S.A. v. Republic of the Philippines (ICSID Case No. ARB/02/6), the tribunal observed that the purpose of the cooling-off period is to provide an opportunity for amicable settlement, and that where the respondent has shown no interest in settlement, insistence on strict compliance with the timing requirement would be formalistic and serve no useful purpose.
Several additional factors support the conclusion that the premature filing does not affect admissibility in this case:
1. Registration occurred close to the expiry date. The ICSID Secretary-General did not register the Request for Arbitration until April 8, 2022 — only six days before the cooling-off period expired on April 14, 2022. Registration is an administrative act performed by the Secretary-General upon being satisfied that the Request is not manifestly outside the Centre's jurisdiction. While registration is not itself the commencement of arbitral proceedings (which occurs with the constitution of the tribunal), it represents the first formal step in the ICSID process. By the time of registration, the cooling-off period had substantially elapsed.
2. The tribunal has not been constituted. The proceedings have been dormant since June 2022, and the tribunal has not been constituted. By the time the tribunal is constituted and the proceedings are active, the cooling-off period will have long expired. Any theoretical deficiency has been fully cured by the passage of time.
3. No prejudice to the Respondent. The Republic of Valderia has not been prejudiced by the premature filing. During the entire cooling-off period — and indeed from the date of the Notice of Dispute through the present day — the Respondent has made no substantive response to the Notice, has not proposed settlement discussions, and has not expressed any willingness to resolve the dispute amicably. The purpose of the cooling-off period — to facilitate amicable settlement — could not have been served even if the Request had been filed after April 14, 2022.
4. Substantial compliance. DEH substantially complied with the cooling-off requirement: it gave proper written notice to the appropriate government officials; it allowed more than five months to elapse before filing the Request; and the full six-month period expired before registration and long before any further procedural steps in the arbitration.
Conclusion: The premature filing of the Request for Arbitration does not render the claim inadmissible. Under prevailing ICSID jurisprudence, the cooling-off period is a procedural requirement, not a jurisdictional bar, and minor non-compliance is curable where the period has substantially elapsed, the respondent has suffered no prejudice, and the purpose of the requirement has not been frustrated. DEH's claim satisfies the admissibility requirement in this respect.
B. No Pending Parallel Proceedings
DEH has not initiated any parallel proceedings against the Republic of Valderia in Valderian domestic courts, in any other national court, or in any other international forum. DVU has likewise not commenced any domestic litigation or administrative proceedings in Valderia challenging the expropriatory measures.
The UK-Valderia BIT does not contain a "fork-in-the-road" clause — that is, a provision requiring the investor to choose irrevocably between domestic courts and international arbitration, with the exercise of one option precluding the other. This point is noted for completeness and to confirm that no admissibility issue arises on this basis. Even if the BIT did contain such a clause, it would not be triggered in the present case, as DEH has elected ICSID arbitration as the sole forum for the resolution of the dispute.
Conclusion: There are no pending parallel proceedings that could affect the admissibility of DEH's claim.
C. No Requirement to Exhaust Local Remedies
Article 8 of the UK-Valderia BIT does not require the exhaustion of local remedies as a condition precedent to the submission of a dispute to ICSID arbitration. The absence of such a requirement in the BIT is consistent with the general approach of UK model BITs, which provide for direct access to international arbitration without a prior requirement to pursue domestic proceedings.
In any event, Article 26 of the ICSID Convention provides that "[c]onsent of the parties to arbitration under this Convention shall, unless otherwise stated, be deemed exclusive of any other remedy." The Article further provides that "[a] Contracting State may require the exhaustion of local administrative or judicial remedies as a condition of its consent to arbitration under this Convention," but Valderia has not imposed such a condition in the BIT or otherwise.
Even if a requirement to exhaust local remedies existed (which it does not), such remedies would be futile in the present circumstances. The expropriation was authorized at the highest level of the Valderian government — by presidential decree — and was implemented through the coordinated actions of multiple arms of the state, including the military, the Ministry of Energy, the Attorney General's office, and the state-owned oil company. The Valderian judiciary lacks independence from the executive in matters of sovereign resource policy, and there is no realistic prospect that a Valderian court would countermand a presidential decree on the nationalization of strategic assets. DVU's bank accounts have been frozen by order of the Attorney General, making it effectively impossible for DVU to fund domestic litigation. Local counsel in Valderia, Dr. Gabriel Castaño Herrera of Castaño Herrera & Asociados (Puerto Valdés), has confirmed in a written opinion dated November 2021 that domestic proceedings to challenge the expropriation would be impracticable and would not offer an effective remedy.
Conclusion: There is no requirement to exhaust local remedies, and even if such a requirement existed, it would be excused on the grounds of futility.
D. Notice Requirements
As noted in Part II.F above, DEH delivered its formal Notice of Dispute to the Republic of Valderia on October 14, 2021, through Calderwood & Harkness LLP. The Notice was addressed and delivered to the appropriate organs of the Valderian government — specifically, the Minister of Foreign Affairs (Ambassador Diego Fuentes Castillo) and the Attorney General (Dr. Renata Villamizar Ochoa) — through both international courier service and diplomatic channels via the Valderian Embassy in London.
The content of the Notice satisfied the requirements of Article 8 of the BIT. The Notice identified the investor (DEH), described the investment (the Bloque Orinoco Sur concession and associated assets held through DVU), set forth a statement of the dispute (the expropriatory measures taken by the Respondent), identified the BIT provisions alleged to have been breached (Articles 3 and 5), and stated DEH's intention to submit the dispute to ICSID arbitration if the dispute was not resolved amicably within the six-month cooling-off period.
Conclusion: The notice requirements of Article 8 have been satisfied. The Notice of Dispute was properly addressed, timely delivered, and substantively adequate.
V. ANTICIPATED JURISDICTIONAL OBJECTIONS BY THE RESPONDENT
Based on our experience with ICSID proceedings, our familiarity with the arguments typically advanced by respondent states in investment arbitrations involving the extractive industries, and our assessment of the specific facts of this case, we anticipate that the Respondent — likely through its international counsel, Harcastle Fenton LLP (Charles Winterbottom QC), and its local counsel, Ortega & Bernal (Dr. Alejandro Bernal Quiroga) — may raise the following jurisdictional objections. For each objection, we set forth the anticipated argument and our assessment of its merits and the Claimant's response.
A. Corporate Nationality and the "Shell Company" Argument
Anticipated Argument. The Respondent may argue that DEH is a "shell" or "mailbox" company incorporated in the Cayman Islands for the sole or primary purpose of accessing BIT protection, and that the tribunal should disregard DEH's formal place of incorporation and instead look to the nationality of its ultimate beneficial owners or the location of its real economic activity. The Respondent may characterize DEH as having no genuine connection to the Cayman Islands and as being, in substance, a vehicle created to benefit from the UK-Valderia BIT's territorial extension.
Response. This objection is unlikely to succeed for several reasons:
First, DEH was incorporated in the Cayman Islands prior to both the BIT's territorial extension (February 14, 2007) and the grant of the concession (September 12, 2013). There is no evidence — and we are not aware of any facts suggesting — that DEH's incorporation in the Cayman Islands was motivated by a desire to gain access to the UK-Valderia BIT. The corporate structure was established for legitimate commercial and tax-planning purposes that are standard in the international oil and gas industry, where Cayman Islands holding companies are routinely used for holding upstream assets and facilitating international capital flows.
Second, DEH is not a mere "letterbox" entity devoid of economic substance. DEH employs personnel, maintains its principal business office at 27 Curzon Street, London, holds regular board meetings, makes investment and operational decisions, manages its subsidiary DVU, and is the entity through which all investment decisions regarding the Valderian concession were taken. DEH has engaged auditors (Ashworth & Palliser LLP, London), arranged project finance (Commonwealth Capital Bank plc, London), and conducted all of its business activities in a manner consistent with a genuine and active holding company.
Third, the BIT's definition of "companies" employs an incorporation test, not a seat-of-operations or siège réel test. Article 1 of the BIT covers any company "incorporated or constituted under the law in force in any part of the United Kingdom or in any territory to which this Agreement is extended." DEH is incorporated under the laws of the Cayman Islands, a territory to which the BIT has been extended. That is the end of the inquiry under the treaty text.
Fourth, ICSID tribunals have consistently upheld jurisdiction for holding companies incorporated in treaty-covered jurisdictions, even where the company's operational activities are conducted elsewhere. In Tokios Tokelés v. Ukraine, the tribunal rejected the respondent's argument that the claimant was a "shell" company, holding that the place-of-incorporation test contained in the applicable BIT was determinative. In ADC Affiliate Limited and ADC & ADMC Management Limited v. Republic of Hungary (ICSID Case No. ARB/03/16), the tribunal likewise upheld jurisdiction for a Cyprus-incorporated holding company. And in Saluka Investments B.V. v. Czech Republic, the tribunal confirmed that a Dutch-incorporated entity qualified as a protected investor under the Netherlands-Czech Republic BIT regardless of the nationality of its ultimate beneficial owners.
Fifth, even if the tribunal were to look through DEH to its ultimate beneficial owners (which it should not), 74% of DEH's equity is held by British nationals. The predominant nationality of the beneficial owners is the nationality that gives rise to the BIT claim. This is the opposite of a case in which piercing the veil would reveal that the "true" investor is a national of a non-treaty state.
Assessment: Weak objection. The corporate nationality argument is a standard tool in the respondent's defensive arsenal, but it faces formidable obstacles on the facts and the law of this case.
B. Denial of Benefits
Anticipated Argument. Some bilateral investment treaties include a "denial of benefits" clause (modeled on Article 17 of the Energy Charter Treaty), which allows a Contracting State to deny the advantages of the treaty to investors that are controlled by nationals of a third state and that have no substantial business activities in the territory of the Contracting Party under whose laws the investor is organized. The Respondent may argue that, if the UK-Valderia BIT contains such a clause, Valderia is entitled to deny the benefits of the BIT to DEH.
Response. Our analysis of the UK-Valderia BIT indicates that the BIT does include a denial-of-benefits provision in Article 7. However, even if the Respondent invokes this provision, the objection would fail for the following reasons:
First, DEH is controlled by British nationals. As noted above, 74% of DEH's equity is held by Sir Malcolm Dunmore (British), Priya Nandakumar (dual British-Indian), and Thomas Rearden (British). DEH is not controlled by "nationals of a third state" in any meaningful sense. The remaining 26% is held by Meridian Growth Partners Fund III, L.P., a Cayman Islands limited partnership — i.e., an entity domiciled in the same jurisdiction as DEH and in a territory to which the BIT has been extended. Even under the most liberal interpretation of "third state control," the factual predicate for the denial-of-benefits clause is not met.
Second, DEH has substantial business activities connected to the United Kingdom and the Cayman Islands. Its principal business office is in London; its directors are based in London; its auditors and bankers are London-based i