UNITED STATES PATENT AND TRADEMARK OFFICE BEFORE THE PATENT TRIAL AND APPEAL BOARD SPRINT SPECTRUM L.P. Petitioner v. GENERAL ACCESS SOLUTIONS, LTD. Patent Owner Inter Partes Review Case No. 2017-01889 U.S. Patent No. 7,230,931 PETITIONER’S UPDATED MANDATORY DISCLOSURES Petitioner previously identified Sprint Spectrum L.P., Virgin Mobile USA, L.P., Boost Mobile, LLC, Clearwire Corporation, Clearwire Communications LLC, Clear Wireless LLC, and Sprint Corporation as real parties-in-interest. As a result of a series of corporate transactions, Petitioner hereby updates its real party-in- interest information for purposes of the remaining proceedings in this IPR on remand from the Court of Appeals for the Federal Circuit, as shown below. Pursuant to this update, Petitioner identifies the following additional real parties-in-interest in addition to those previously identified: Assurance Wireless 1 84815668.1 USA, L.P., SprintCom, Inc., Sprint Communications, Inc., T-Mobile US, Inc., T- Mobile USA, Inc., and DISH Network Corporation. Previously identified Virgin Mobile USA, L.P. underwent a name change effective February 18, 2020 to change its name to Assurance Wireless USA, L.P. Effective in February 2020, Virgin Mobile brand subscribers were transferred to the Boost Mobile brand. Previously identified Boost Mobile LLC was dissolved in 2016 and its former subscribers were serviced by SprintCom, Inc. until on or about July 1, 2020. On June 11, 2020, SprintCom, Inc., and Assurance Wireless USA, L.P., were substituted as parties to the underlying infringement lawsuit in the Eastern District of Texas, now re-captioned under Case No. 2:20-cv-00007-RWS (E.D. Tex.), in place of Boost Mobile, LLC, and Virgin Mobile USA, L.P., respectively. As a result of a merger on April 1, 2020, Sprint Corporation is a wholly- owned subsidiary of T-Mobile USA, Inc. T-Mobile USA, Inc. is a wholly-owned subsidiary of T-Mobile US, Inc. Effective May 8, 2020, previously identified Clearwire Corporation was merged into Sprint Communications, Inc. Effective July 1, 2020, pursuant to an Asset Purchase Agreement between T- Mobile US, Inc., Sprint Corporation, and DISH Network Corporation, the Boost Mobile brand was acquired by DISH Network Corporation. Subscribers of the Boost Mobile brand, including former subscribers of the Virgin Mobile brand, are -2- 84815668.1 now subscribers of DISH Network Corporation, with their devices operating on the networks of Sprint Spectrum L.P. and/or T-Mobile USA, Inc. Petitioner’s identification of Sprint Corporation, T-Mobile US, Inc., T- Mobile USA, Inc., and DISH Network Corporation as real parties in interest for purposes of this proceeding only is out of an abundance of caution and only to the extent that Patent Owner contends that these separate legal entities should be named as real parties in interest in this IPR. Sprint Corporation, T-Mobile US, Inc., and T-Mobile USA, Inc. are legally and factually distinct entities from their subsidiaries. Each of T-Mobile USA, Inc.’s subsidiaries, including Sprint Spectrum L.P., maintains its own independent status, identity, and structure. Dated: July 8, 2020 Respectfully submitted, By: /Robert C. Hilton________ Robert C. Hilton Reg. No. 47,649 Jason W. Cook Reg. No. 48,456 MCGUIREWOODS LLP 2000 McKinney Ave., Suite 1400 Dallas, TX 75201 Telephone: (214) 932-6400 Facsimile: (214) 932-6499 Email: [email protected] [email protected] -3- 84815668.1 George B. Davis Reg. No. 68,205 MCGUIREWOODS LLP Gateway Plaza 800 East Canal Street Richmond, VA 23219 Telephone: (804) 775-1000 Facsimile: (804) 775-2016 Email: [email protected] Attorneys for Petitioner -4- 84815668.1 CERTIFICATE OF SERVICE Pursuant to 37 C.F.R. §§ 42.6(e), the undersigned certifies that on July 8, 2020, a complete and entire copy of Petitioner’s Updated Mandatory Disclosures, was served on the following counsel of record for Patent Owner via electronic mail: Sarah E. Spires, Reg. No. 61,501 Steven W. Hartsell, Reg. No. 58,788 Paul J. Skiermont (pro hac vice) SKIERMONT DERBY LLP 1601 Elm Street, Suite 4400 Dallas, TX 75201 [email protected] By: /George B. Davis/__________ George B. Davis Reg. No. 68,205 [email protected] Attorney for Petitioner -5- 84815668.1 .