Contract analysis

I. Executive Summary This memorandum presents a comprehensive analysis of the complete prosecution histories of the three utility patents asserted by Apex Surgical Innovations, Inc. ("Apex") against Solstice Biomedical, Inc. ("Solstice") in the above-captioned litigation: U.S. Patent No. 9,814,237 (the "'237 Patent"), U.S. Patent No. 10,271,884 (the "'884 Patent"), and U.S. Patent No. 10,932,105 (the "'105 Patent").

II. Background — The Asserted Patents and Accused Products A. The Asserted Patents — Overview Table The following table summarizes the key bibliographic data for each of the three asserted patents: Each patent is discussed in greater detail in the prosecution history analysis sections below. U.S. Patent No. 9,814,237 (the "'237 Patent"). The '237 Patent is titled "Locking Seal Assembly for Minimally Invasive Surgical

III. Prosecution History Analysis — U.S. Patent No. 9,814,237 (the '237 Patent) A. Application Filing and Original Claims Application Serial No. 14/745,210, which ultimately issued as the '237 Patent, was filed on June 22, 2015, by Dr. Raymond Szabo as the sole named inventor, with Apex Surgical Innovations, Inc. identified as the applicant and assignee. The application claimed priority to Provisional Application No.

1. A seal assembly for a surgical access device, comprising: a housing defining a channel therethrough for receiving a surgical instrument; a sealing element disposed within the housing and configured to form a seal around the surgical instrument inserted through the channel; and a locking mechanism coupled to the housing and configured to secure the sealing element in a sealed position. This claim was remarkably bro

1. A seal assembly for a surgical access device, comprising: a rigid annular housing defining a channel therethrough for receiving a surgical instrument; a radially-compressible elastomeric sealing element disposed coaxially within the rigid annular housing and configured to form a seal around the surgical instrument inserted through the channel; and a locking mechanism coupled to the rigid annular housing and config

1. A seal assembly for a surgical access device, comprising: a rigid annular housing defining a channel therethrough for receiving a surgical instrument; a radially-compressible elastomeric sealing element disposed coaxially within the rigid annular housing and configured to form a seal around the surgical instrument inserted through the channel; and a locking mechanism coupled to the rigid annular housing and config

IV. Prosecution History Analysis — U.S. Patent No. 10,271,884 (the '884 Patent) A. Application Filing and Original Claims Application Serial No. 15/629,873, which ultimately issued as the '884 Patent, was filed on June 21, 2017, as a continuation-in-part of Application Serial No. 14/745,210 (the application that issued as the '237 Patent). The continuation-in-part added new matter to the specification relating to the

1. A retractable blade deployment mechanism for a trocar system, comprising: a blade carrier supporting a surgical blade; an actuator configured for axial displacement by a user; and a linkage operatively connecting the actuator to the blade carrier, wherein axial displacement of the actuator causes deployment of the surgical blade from a retracted position to an extended position. This original claim was broadly dra

1. A retractable blade deployment mechanism for a trocar system, comprising: a blade carrier supporting a surgical blade; an actuator configured for axial displacement by a user; and a cam-follower linkage operatively connecting the actuator to the blade carrier, wherein axial displacement of the actuator causes rotational displacement of the blade carrier through the cam-follower linkage, thereby deploying the surgi

I. Summary of Estoppel Arguments for the '884 Patent The prosecution history of the '884 Patent provides the following estoppel arguments for Solstice's defense: Amendment-Based Estoppel. The narrowing of Claim 1 from a generic "linkage" causing blade deployment through axial displacement to a specific "cam-follower linkage" causing "rotational displacement" along a "deployment arc" creates strong amendment-based est