Merck Sharp & Dohme LLC vs. Halozyme, Inc. et al.
Explore the PTAB proceeding IPR2026-00312 filed by Merck Sharp & Dohme LLC on 2026-03-23. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.
Proceeding Overview
Proceeding Number
IPR2026-00312
Filing Date
2026-03-23
Accorded Filing Date
2026-03-23
Institution Decision Date
2026-09-09
Last Modified Date
2026-10-20
Proceeding Type
IPR
Termination Date
—
Trial Status
Trial Instituted
Parties & Counsel
Petitioner
Merck Sharp & Dohme LLC
Represented By
KUSHAN, JEFFREYet alPatent Owner / Respondent
Halozyme, Inc. et al.
Represented By
Ellison, Eldoraet alTribunal & Venue
Tribunal
Patent Trial and Appeal Board (USPTO)
Technology Center
TC 1600 - Biotechnology & Organic Chemistry
Patent Information
Respondent Application Number
15226489
Respondent Patent Number
10865400
External Links
Respondent Inventor
Ge Wei et al
Respondent Tech Center
TC 1600 - Biotechnology & Organic Chemistry
Address and Attorney/Agent Information
Power of Attorney & Correspondence
Firm
/ Entity Name
Womble Bond Dickinson/Seidman Group
Customer
Number
—
Address
Attn: IP Docketing, PO. Box 570489, Atlanta, GA, 30357-0037, UNITED STATES
Attorney / Agent Information
| Reg # | Name | Phone |
|---|---|---|
| 33779 | Stephanie Seidman | 858-313-1405 |
| 43683 | Christopher Humphrey | 919-755-8156 |
Proceeding Documents
187
29
Joint Stipulation to Modify Due Dates 1-3 NOTICE
2026-10-20
FILING PARTY: PATENT OWNER
28
Patent Owner's Notice of Naismith Deposition NOTICE
2026-10-20
FILING PARTY: PATENT OWNER
27
Authorized Response to Director Review Request OTHER
2026-10-19
FILING PARTY: PETITIONER
26
Patent Owner's Request for Director Review REQUEST
2026-10-09
FILING PARTY: PATENT OWNER
3100
Ex. 3100 Email authorizing Director Review response Exhibit
2026-10-09
FILING PARTY: BOARD