Merck Sharp & Dohme LLC v. Halozyme, Inc. et al. - IPR2026-00313

Explore the PTAB proceeding IPR2026-00313 filed by Merck Sharp & Dohme LLC against Halozyme, Inc. et al. on Mar 23, 2026. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Case Details

Proceeding Number
IPR2026-00313
Filing Date
Mar 23, 2026
Petitioner
Merck Sharp & Dohme LLC
Respondent
Halozyme, Inc. et al.
Status
Pending
Respondent Application Number
16824572
Respondent Tech Center
1600
Respondent Patent Number
11041149

Decision Documents New

Decision documents related to this case provide insights into the outcomes of proceedings. These documents are crucial for understanding the legal determinations and implications for the parties involved.

Document NameFiling DateCategoryFiling Party

EX2032 - PGR2025-00003 Institution Decision

May 27, 2026EXHIBITPATENT OWNER

Proceeding Documents

The table below shows documents filed in the case, listing each document name, filing date, document type, and filing party. Tracking these filings indicates the activity of the parties involved in the case, and the types of documents filed can provide insights into the legal strategies being employed.

Document NameFiling DateCategoryFiling Party

Alert me when new update on this case

PHV NOI for Zachariah Summers

May 27, 2026EXHIBITBOARD

Patent Owner's Motion to Seal

May 27, 2026PAPERPATENT OWNER

Patent Owner's Discretionary Denial Brief (CONFIDENTIAL - PROTECTIVE ORDER MATERIAL)

May 27, 2026PAPERPATENT OWNER

EX2001 - Merck 10K Annual Report FY2025 (2026-02-24)

May 27, 2026EXHIBITPATENT OWNER

EX2002 - File History for US Appl No. 19346638

May 27, 2026EXHIBITPATENT OWNER

EX2003 - Merck Patents Webpage

May 27, 2026EXHIBITPATENT OWNER

EX2004 - Merck 10Q Quarterly Report (2026-05-04)

May 27, 2026EXHIBITPATENT OWNER

EX2005 - Merck 10Q Quarterly Report (2025-11-05)

May 27, 2026EXHIBITPATENT OWNER

EX2006 - Merck Jobs - Patent Counsel

May 27, 2026EXHIBITPATENT OWNER

EX2007 - Merck Jobs - Oncology Customer Team Leader

May 27, 2026EXHIBITPATENT OWNER

EX2008 - 2025 Merck Schedule 14A Proxy Statement

May 27, 2026EXHIBITPATENT OWNER

EX2009 - Merck Co - Bylaws

May 27, 2026EXHIBITPATENT OWNER

EX2010 - USPTO OED Practitioner Search - Mark Stewart registration

May 27, 2026EXHIBITPATENT OWNER

EX2011 - OED Search

May 27, 2026EXHIBITPATENT OWNER

EX2012 - EP622 Minutes (2025-12-04) Halozyme v MSD

May 27, 2026EXHIBITPATENT OWNER

EX2013 - Merck OED Search

May 27, 2026EXHIBITPATENT OWNER

EX2014 - Executive Team - MSD

May 27, 2026EXHIBITPATENT OWNER

EX2015 - Executive Team - Merck

May 27, 2026EXHIBITPATENT OWNER

EX2016 - MSD Entity Details

May 27, 2026EXHIBITPATENT OWNER

EX2017 - First Word Pharma

May 27, 2026EXHIBITPATENT OWNER

EX2018 - Merck Earnings Call Transcript

May 27, 2026EXHIBITPATENT OWNER

EX2019 - District Court Complaint

May 27, 2026EXHIBITPATENT OWNER

EX2020 - BioSpectator 2024-02-26

May 27, 2026EXHIBITPATENT OWNER

EX2021 - Pulse 2024-02-26

May 27, 2026EXHIBITPATENT OWNER

EX2022 - KeytrudaQlex BLA Letter

May 27, 2026EXHIBITPATENT OWNER

EX2023 - Opdivo BLA Letter

May 27, 2026EXHIBITPATENT OWNER

EX2024 - District Court Docket No. 34

May 27, 2026EXHIBITPATENT OWNER

EX2025 - District Court Docket No. 50

May 27, 2026EXHIBITPATENT OWNER

EX2026 - Meet and Confer Email Exchange

May 27, 2026EXHIBITPATENT OWNER

EX2028 - Hecht PGR Deposition Transcript

May 27, 2026EXHIBITPATENT OWNER

EX2029 - PGR2025-00003 Petition

May 27, 2026EXHIBITPATENT OWNER

EX2030 - PGR2025-00003 EX1003 - Hecht Declaration

May 27, 2026EXHIBITPATENT OWNER

EX2031 - PGR2025-00003 EX1004 - Park Declaration

May 27, 2026EXHIBITPATENT OWNER

EX2032 - PGR2025-00003 Institution Decision

May 27, 2026EXHIBITPATENT OWNER

EX2027 - Grez Deposition Transcript (CONFIDENTIAL - PROTECTIVE ORDER MATERIAL)

May 27, 2026EXHIBITPATENT OWNER

EX2033 - PGR2025-00003 POR

May 27, 2026EXHIBITPATENT OWNER

Patent Owner's Notice of Intent to Designate Provisionally Recognized PTAB Attorney as Back-up Counsel

May 13, 2026PAPERPATENT OWNER

Patent Owner's Exhibit List

May 13, 2026PAPERPATENT OWNER

EX2214 - Summers PTAB Declaration

May 13, 2026EXHIBITPATENT OWNER

Corrected Declaration of Leif E. Peterson, II

May 5, 2026EXHIBITPETITIONER

Corrected Declaration Sue Wang

May 5, 2026EXHIBITPETITIONER

Corrected Declaration of Brian M. Goldberg

May 5, 2026EXHIBITPETITIONER

Correspondence regarding Provisionally Recognized PTAB Attorneys

Apr 29, 2026EXHIBITBOARD

Petitioner's Notice of Intent to Designate Counsel

Apr 20, 2026PAPERPETITIONER

Petitioner's Updated Exhibit List

Apr 20, 2026PAPERPETITIONER

Declaration of Leif E. Peterson, II

Apr 20, 2026EXHIBITPETITIONER

Declaration of Sue Wang

Apr 20, 2026EXHIBITPETITIONER

Declaration of Brian M. Goldberg

Apr 20, 2026EXHIBITPETITIONER

Declaration of Katherine A. Helm, Ph.D.

Apr 20, 2026EXHIBITPETITIONER

Declaration of Christine M. Engen

Apr 20, 2026EXHIBITPETITIONER

Declaration of Amit Bhatla

Apr 20, 2026EXHIBITPETITIONER

Patent Owner's Power of Attorney

Apr 13, 2026PAPERPATENT OWNER

Patent Owner's Mandatory Notices

Apr 13, 2026PAPERPATENT OWNER

Notice filing date accorded

Mar 27, 2026PAPERBOARD

U.S. Patent No. 11,041,149

Mar 23, 2026EXHIBITPETITIONER

File History of U.S. Patent No. 11,041,149 Part 1

Mar 23, 2026EXHIBITPETITIONER

File History of U.S. Patent No. 11,041,149 Part 2

Mar 23, 2026EXHIBITPETITIONER

United States Patent Publication No. 2013/0302275

Mar 23, 2026EXHIBITPETITIONER

U.S. Patent No. 7,767,429

Mar 23, 2026EXHIBITPETITIONER

Chao, Structure of Human Hyaluronidase-1 (2007)

Mar 23, 2026EXHIBITPETITIONER

WO 2010/077297, published 8 July 2010

Mar 23, 2026EXHIBITPETITIONER

Stern, The Hyaluronidases: Their Genomics, Structures, & Mechanisms (2006)

Mar 23, 2026EXHIBITPETITIONER

Jedzrejas, Structures of Vertebrate Hyaluronidases (2005)

Mar 23, 2026EXHIBITPETITIONER

Zhang, Hyaluronidase Activity of Human Hyal1 (2009)

Mar 23, 2026EXHIBITPETITIONER

Arming, In vitro Mutagenesis of PH-20 Hyaluronidase from Human Sperm (1997)

Mar 23, 2026EXHIBITPETITIONER

Bordoli, Protein Structure Homology Modeling Using SWISSMODEL (2008)

Mar 23, 2026EXHIBITPETITIONER

Frost, Recombinant Human Hyaluronidase (rHuPH20) (2007)

Mar 23, 2026EXHIBITPETITIONER

Branden & Tooze, Introduction to Protein Structure (1999) Part 1

Mar 23, 2026EXHIBITPETITIONER

Branden & Tooze, Introduction to Protein Structure (1999) Part 2

Mar 23, 2026EXHIBITPETITIONER

Table Associating Citations from the ’149 Patent to '731 App and US-275

Mar 23, 2026EXHIBITPETITIONER

Steipe, Consensus-Based Engineering of Protein Stability (2004)

Mar 23, 2026EXHIBITPETITIONER

Green, Computer Graphics, Homology Modeling, and Bioinformatics (2010)

Mar 23, 2026EXHIBITPETITIONER

Chica, Semi-rational Approaches to Engineering Enzyme Activity (2005)

Mar 23, 2026EXHIBITPETITIONER

Hardy Assessment of Contraceptive Vaccines Based on Recombinant Mouse Sperm

Mar 23, 2026EXHIBITPETITIONER

Pomering, Restricted Entry of IgG (2002)

Mar 23, 2026EXHIBITPETITIONER

Baba, Mouse Sperm Lacking Cell Surface Hyaluronidase PH-20 (2002)

Mar 23, 2026EXHIBITPETITIONER

Primakoff, Reversible Contraceptive Effect of PH-20 Immunization (1997)

Mar 23, 2026EXHIBITPETITIONER

Tung, Mechanism of Infertility in Male Guinea Pigs Immunized with Sperm

Mar 23, 2026EXHIBITPETITIONER

Rosengren, Recombinant Human PH20 (2018)

Mar 23, 2026EXHIBITPETITIONER

U.S. Patent Application No. 13/694,731

Mar 23, 2026EXHIBITPETITIONER

2024 Chemistry Nobel Prize Background

Mar 23, 2026EXHIBITPETITIONER

Bordier “Phase separation integral membrane proteins Triton X-114" (1981)

Mar 23, 2026EXHIBITPETITIONER

Gmachl, The Human Sperm Protein PH-20 Has Hyaluronidase Activity (1993)

Mar 23, 2026EXHIBITPETITIONER

Sills, “Retraction,” Science, 319:569 (2008)

Mar 23, 2026EXHIBITPETITIONER

Yue, Loss of Protein Structure Stability as a Major Causative Factor (2005)

Mar 23, 2026EXHIBITPETITIONER

Wang & Moult, SNPs, Protein Structure, and Disease (2001)

Mar 23, 2026EXHIBITPETITIONER

Markovic-Housley, Crystal Structure of Hyaluronidase (2000)

Mar 23, 2026EXHIBITPETITIONER

“Negative Results,” Nature: Editorials, 453:258 (2008)

Mar 23, 2026EXHIBITPETITIONER

Hayden, Chemistry: Designer Debacle (2008)

Mar 23, 2026EXHIBITPETITIONER

Alberts, Molecular Biology of the Cell, Chapter 3 (2007)

Mar 23, 2026EXHIBITPETITIONER

He, NMR Structures of Two Designed Proteins with High Sequence Identity

Mar 23, 2026EXHIBITPETITIONER

Alexander, A Minimal Sequence Code for Switching Protein Structure (2009)

Mar 23, 2026EXHIBITPETITIONER

Ruan, Design & Characterization of a Protein Fold Switching Network (2023)

Mar 23, 2026EXHIBITPETITIONER

Redline Comparison of the ’731 Application and ’149 Patent Specifications

Mar 23, 2026EXHIBITPETITIONER

Beasley & Hecht, Protein Design: The Choice of de Novo Sequences (1997)

Mar 23, 2026EXHIBITPETITIONER

Xiong, Periodicity of Polar and Nonpolar Amino Acids (1995)

Mar 23, 2026EXHIBITPETITIONER

Hayden, Key Protein-Design Papers Challenged (2009)

Mar 23, 2026EXHIBITPETITIONER

U.S. Patent Application No. 61/631,313

Mar 23, 2026EXHIBITPETITIONER

U.S. Patent Application No. 61/796,208

Mar 23, 2026EXHIBITPETITIONER

Leisola & Turunen, Protein Engineering: Opportunities and Challenges (2007)

Mar 23, 2026EXHIBITPETITIONER

Rosengren, Clinical Immunogenicity of rHuPH20 (2015)

Mar 23, 2026EXHIBITPETITIONER

Collection of SWISS-MODEL Webpages from the Internet Archive

Mar 23, 2026EXHIBITPETITIONER

Declaration of Jeffrey P. Kushan

Mar 23, 2026EXHIBITPETITIONER

Hunnicutt, Sperm Surface Protein PH-20 Is Bifunctional (1996)

Mar 23, 2026EXHIBITPETITIONER

Bookbinder, A Recombinant Human Enzyme for Enhanced Interstitial Transport

Mar 23, 2026EXHIBITPETITIONER

Goldberg, Protein Degradation and Protection (2003)

Mar 23, 2026EXHIBITPETITIONER

Vembar & Brodsky, “One Step at a Time: Endoplasmic Reticulum" (2008)

Mar 23, 2026EXHIBITPETITIONER

United States Patent Publication No. 2010/0143457

Mar 23, 2026EXHIBITPETITIONER

Primakoff “Fully effective contraception in male and female guinea" (1988)

Mar 23, 2026EXHIBITPETITIONER

Im, S. “Cryo-EM Structure of Human Hyaluronidase PH20,” (2025)

Mar 23, 2026EXHIBITPETITIONER

Melanie Ann Simpson, Ph.D. Deposition Transcript

Mar 23, 2026EXHIBITPETITIONER

Gregory Petsko, Ph.D. Deposition Transcript

Mar 23, 2026EXHIBITPETITIONER

Dr. Naismith Analysis Spreadsheet

Mar 23, 2026EXHIBITPETITIONER

Dobson, “Principles of protein folding, misfolding and aggregation” (2004)

Mar 23, 2026EXHIBITPETITIONER

Dobson, “Protein folding and misfolding” Nature. 18;426(6968):884-90 (2003)

Mar 23, 2026EXHIBITPETITIONER

Dobson “Experimental investigation protein folding and misfolding” (2004)

Mar 23, 2026EXHIBITPETITIONER

Chiti “Protein Misfolding, Functional Amyloid, and Human Disease” (2006)

Mar 23, 2026EXHIBITPETITIONER

Dobson, “Protein misfolding, evolution and Disease” (1999)

Mar 23, 2026EXHIBITPETITIONER

Goldsmith “Directed enzyme evolution: beyond the low-hanging fruit" (2012)

Mar 23, 2026EXHIBITPETITIONER

Ochoa-Leyva “Protein Design through Systematic Catalytic Loop" (2009)

Mar 23, 2026EXHIBITPETITIONER

Pal “Comprehensive and Quantitative Mapping of Energy Landscapes" (2006)

Mar 23, 2026EXHIBITPETITIONER

van Rossum, “Reporter-based screening and selection of enzymes” (2013)

Mar 23, 2026EXHIBITPETITIONER

Reed “Use of Coefficient of Variation in Assessing Variability" (2002)

Mar 23, 2026EXHIBITPETITIONER

TenHave “Cloning and characterization of the cDNA encoding the PH20" (1998)

Mar 23, 2026EXHIBITPETITIONER

Chowpongpang “Cloning and characterization of the bovine testicular" (2004)

Mar 23, 2026EXHIBITPETITIONER

Fowler “High-resolution mapping of protein sequence function" (2010)

Mar 23, 2026EXHIBITPETITIONER

Ringe & Petsko “Q&A: What are pharmacological chaperones" (2009)

Mar 23, 2026EXHIBITPETITIONER

Calloni “Investigating the Effects of Mutations on Protein" (2005)

Mar 23, 2026EXHIBITPETITIONER

Chiti "Studies of aggregation of mutant proteins in vitro insights" (2002)

Mar 23, 2026EXHIBITPETITIONER

Chiti “Rationalization of the effects of mutations on peptide" (2003)

Mar 23, 2026EXHIBITPETITIONER

Wang “Immunogenicity of protein aggregates-Concerns and Realities” (2012)

Mar 23, 2026EXHIBITPETITIONER

Poelwijk, Frank J., "Empirical fitness landscapes reveal" (2007)

Mar 23, 2026EXHIBITPETITIONER

MartinDeleon, P. “Epididymal SPAM1 and its Impact on Sperm Function” (2006)

Mar 23, 2026EXHIBITPETITIONER

U.S. Food and Drug Administration, Medical Review: Hylenex, (2005)

Mar 23, 2026EXHIBITPETITIONER

US Patent No. 12,091,692

Mar 23, 2026EXHIBITPETITIONER

Redline of the ’731 App. and US-275 Publication

Mar 23, 2026EXHIBITPETITIONER

Petsko & Ringe, Protein Structure and Function (2004) Part 1

Mar 23, 2026EXHIBITPETITIONER

Petsko & Ringe, Protein Structure and Function (2004) Part 2

Mar 23, 2026EXHIBITPETITIONER

Petsko & Ringe, Protein Structure and Function (2004) Part 3

Mar 23, 2026EXHIBITPETITIONER

Petsko & Ringe, Protein Structure and Function (2004) Part 4

Mar 23, 2026EXHIBITPETITIONER

Nelson & Cox, Lehninger Principles of Biochemistry (2005)

Mar 23, 2026EXHIBITPETITIONER

Halozyme Therapeutics, Inc., Hylenex Label, U.S. FDA: AccessData (2005)

Mar 23, 2026EXHIBITPETITIONER

Declaration of Dr. James Naismith

Mar 23, 2026EXHIBITPETITIONER

Petition for Inter Partes Review of U.S. Patent No. 11,041,149

Mar 23, 2026PAPERPETITIONER

Petitioner's Power of Attorney

Mar 23, 2026PAPERPETITIONER