Last Updated: November 9, 2026

Details for Patent: 9,216,996

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Summary for Patent: 9,216,996
Title:Substituted 2,3,4,5,7,9,13,13a-octahydropyrido[1′,2′:4,5]pyrazino[2,1-b][1,3]oxazepines and methods for treating viral infections
Abstract:Compounds for use in the treatment of human immunodeficiency virus (HIV) infection are disclosed. The compounds have the following Formula (I): including stereoisomers and pharmaceutically acceptable salts thereof, wherein R1, X, W, Y1, Y2, Z1, and Z4are as defined herein. Methods associated with preparation and use of such compounds, as well as pharmaceutical compositions comprising such compounds, are also disclosed.
Inventor(s):Haolun Jin, Scott E. Lazerwith, Hyung-Jung Pyun
Assignee: Gilead Sciences Inc
Application Number:US14/133,858
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,216,996
Patent Claim Types:
see list of patent claims
Composition;

Drugs Protected by US Patent 9,216,996

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Gilead Sciences Inc BIKTARVY bictegravir sodium; emtricitabine; tenofovir alafenamide fumarate TABLET;ORAL 210251-002 Oct 7, 2021 RX Yes No ⤷  Start Trial ⤷  Start Trial Y Y ⤷  Start Trial
Gilead Sciences Inc BIKTARVY bictegravir sodium; emtricitabine; tenofovir alafenamide fumarate TABLET;ORAL 210251-001 Feb 7, 2018 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y Y ⤷  Start Trial
Gilead Sciences Inc BIXLENVO bictegravir sodium; lenacapavir sodium TABLET;ORAL 221104-001 Aug 27, 2026 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y Y ⤷  Start Trial
Gilead Sciences Inc BIXLENVO SUNLENCA STARTER PACK (COPACKAGED) bictegravir sodium, lenacapavir sodium; lenacapavir sodium TABLET;ORAL 221443-001 Aug 27, 2026 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y Y ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 9,216,996

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 2822954 ⤷  Start Trial 300947 Netherlands ⤷  Start Trial
European Patent Office 2822954 ⤷  Start Trial 122018000094 Germany ⤷  Start Trial
European Patent Office 2822954 ⤷  Start Trial LUC00083 Luxembourg ⤷  Start Trial
European Patent Office 2822954 ⤷  Start Trial CA 2018 00029 Denmark ⤷  Start Trial
European Patent Office 2822954 ⤷  Start Trial PA2018511 Lithuania ⤷  Start Trial
European Patent Office 2822954 ⤷  Start Trial 33/2018 Austria ⤷  Start Trial
European Patent Office 2822954 ⤷  Start Trial 2018C/031 Belgium ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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