Sarepta Therapeutics, Inc. et al. vs. Genzyme Corporation et al.

Explore the PTAB proceeding IPR2026-00166 filed by Sarepta Therapeutics, Inc. et al. on 2025-12-02. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2026-00166

Filing Date

2025-12-02

Accorded Filing Date

2025-12-02

Institution Decision Date

—

Last Modified Date

2026-04-25

Proceeding Type

IPR

Termination Date

2026-03-25

Trial Status

Terminated

Parties & Counsel

Petitioner

Sarepta Therapeutics, Inc. et al.

Represented By

Wilson, Robertet al

Patent Owner / Respondent

Genzyme Corporation et al.

Represented By

Antons, Amandaet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 1700 - Chemical & Materials Engineering

Patent Information

1 Patent Involved

Respondent Application Number 19013863

Respondent Patent Number 12298313

External Links

Espacenet

Google Patents

Respondent Inventor Xiaoying JIN et al

Respondent Tech Center TC 1700 - Chemical & Materials Engineering

Address and Attorney/Agent Information

58 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name Sanofi/Genzyme c/o Morrison & Foerster LLP

Customer Number 89300

Address 755 Page Mill Road, Palo Alto, CA, 94304, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
36844	Joseph Kirk Jr	908-981-6911
39150	John Conway	908-981-6688
39156	B Creagan	617-685-5660
39933	Robert Cerpa	650-813-5715
40130	Catherine Polizzi	650-813-5651
40564	Anne Collins	978-341-0036
42198	Edna Vassilovski	857-331-2474
43743	Jeffrey Lee	617-610-9638
44045	Sandra Brockman-Lee	857-523-9199
45736	Pamela Torpey	508--27-1-0683
45979	Milan Vinnola	619-238-0062
52285	Shannon Reaney	650-813-5600
52395	Jie Zhou	650-813-5922
52610	Kelly Bender	2485930581
52916	Gojeb Frehywot	617-685-5666
54154	Allyson Hatton	508-361-7392
54958	Janann Ali	617-685-5645
59682	Jeremy Bond	617-685-5653
60243	Seth Snyder	212-698-3500
61358	Ryan Mcquade	617-838-5595
63001	Stephanie Donahue	908-331-4406
63750	Mayssam Ali	617-685-5646
63950	Jillian Pesin-Fulop	617-648-4772
64259	Xuemei Peng	908-981-6951
64740	Alan Townsley	202-857-2278
64828	Jeffrey Weber	617-685-6431
67265	Yi Wang	617-685-5735
67946	Nicholas Bero	585-305-7782
68315	Meenakshy Chakravorty	781-418-9211
69080	Lisa Silverman	650-813-5735
70339	John Chapman	650-813-5726
70740	Erika Wallace	617-937-1397
71226	Meghan Klaric	313-465-7211
71792	Anita Choi	415-268-6445
72475	Indrani Dasgupta	617-685-5977
73237	Qiwen Zhong	858-314-5431
73248	Meghan Poon	650-813-4108
73258	Ethan Weiner	650-813-4119
73475	Kevin Jones	415-268-7483
74124	Evan King	781-234-4286
76847	Courtney Cronin	312-701-8755
79382	Kelsey Roberts Kingman	650-889-0114
79763	Sarah Bloch	415-268-6423
800111	Xinhui Zhang	213-892-5601
80029	Thomas Keane	617-368-0502
80264	Christopher Marion	314-517-7022
80424	Victoria Pedanou	508-736-4409
80495	Paige Smith	617-648-4763
80633	Thomas Dawson	617-648-4718
80779	Martin Ellinger	858-314-7615
80994	Briana Mittleman	913-522-0582
81228	Adrienne Cohen	415-268-6854
81337	Deborah Pohlmann	857-234-5168
81386	Erin May	617-251-9709
81412	Emily Roberts	141-523-18674
82515	Elizabeth Cooke	161-764-84804
82697	Keunbong Do	415-268-7536
82998	Yocelyn Recinos	646-712-4790

Proceeding Documents

Notice: refund approved NOTICE

2026-03-31 FILING PARTY: BOARD

Download

Termination Decision: Pre-DI dismissal TERMINATE

2026-03-25 FILING PARTY: BOARD

Download

Petitioner's Refund Request OTHER

2026-03-25 FILING PARTY: PETITIONER

Download

1058

Ex. 1058 Exhibit

2026-03-04 FILING PARTY: PETITIONER

Download

1042

Ex. 1042 Exhibit

2026-03-04 FILING PARTY: PETITIONER

Download

Sarepta Therapeutics, Inc. et al. vs. Genzyme Corporation et al.

Proceeding Overview

Parties & Counsel

Petitioner

Sarepta Therapeutics, Inc. et al.

Represented By

Patent Owner / Respondent

Genzyme Corporation et al.

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Notice: refund approved NOTICE

Termination Decision: Pre-DI dismissal TERMINATE

Petitioner's Refund Request OTHER

Ex. 1058 Exhibit

Ex. 1042 Exhibit

Ex. 1041 Exhibit

Ex. 1056 Exhibit

Ex. 1049 Exhibit

Ex. 1052 Exhibit

Ex. 1057 Exhibit

Response to Patent Owner's Discretionary Denial Brief RESPONSE

Ex. 1043 Exhibit

Ex. 1048 Exhibit

Ex. 1044 Exhibit

Ex. 1054 Exhibit

Ex. 1046 Exhibit

Ex. 1047 Exhibit

Ex. 1051 Exhibit

Ex. 1050 Exhibit

Ex. 1045 Exhibit

Ex. 1053 Exhibit

Ex. 1055 Exhibit

Motion to Withdraw Petition MOTION

Email Correspondence Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) - Defendant’s Supplemental Initial Invalidity Contentions Exhibit

US Patent 11,698,377 File History Exhibit

Vliet Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 45 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 83 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 35 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 102 Exhibit

Patent Owner's Request for Discretionary Denial RESPONSE

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 37 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 28 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 59 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 87 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. Joint Claim Construction Chart Exhibit

US Patent 11,698,377 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 68 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 92 Exhibit

Bark Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 110 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 76 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 78 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 91 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 67 Exhibit

Genzyme Corporation v. Sarepta Therapeutics Inc. (1:24-cv-00882) D.I. 99 Exhibit

Patent Owner's Mandatory Notices NOTICE

Petitioner's Sotera Stipulation OTHER

Declaration of Katherine Helm Exhibit

Notice of Intent to Designate Katherine Helm as Back-Up Counsel NOTICE

Notice: Mandatory Notice NOTICE

Notice: Power of Attorney NOTICE

Notice: Notice filing date accorded NOTICE

Ex. 1035 Exhibit

Ex. 1002 Exhibit

Ex. 1010 Exhibit

Ex. 1004 Exhibit

Ex. 1032 Exhibit

Ex. 1003 Exhibit

Ex. 1011 Exhibit

Ex. 1031 Exhibit

Ex. 1022 Exhibit

Ex. 1038 Exhibit

Ex. 1023 Exhibit