Charles River Laboratories, Inc. vs. Seikagaku Corporation

Explore the PTAB proceeding IPR2025-00440 filed by Charles River Laboratories, Inc. on 2025-01-16. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-00440

Filing Date

2025-01-16

Accorded Filing Date

2025-01-16

Institution Decision Date

2025-09-09

Last Modified Date

2026-10-09

Proceeding Type

IPR

Termination Date

2026-09-08

Trial Status

Final Written Decision

Parties & Counsel

Petitioner

Charles River Laboratories, Inc.

Represented By

McKeown, Scottet al

Patent Owner / Respondent

Seikagaku Corporation

Represented By

Stein, Alexanderet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 1600 - Biotechnology & Organic Chemistry

Patent Information

1 Patent Involved

Respondent Application Number 16399386

Respondent Patent Number 11236318

External Links

Espacenet

Google Patents

Respondent Inventor Hikaru MIZUMURA et al

Respondent Tech Center TC 1600 - Biotechnology & Organic Chemistry

Address and Attorney/Agent Information

55 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name SUGHRUE MION, PLLC

Customer Number 23373

Address 2000 PENNSYLVANIA AVENUE, N.W., SUITE 9000, WASHINGTON, DC, 20006, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
25426	Alan Kasper	202-293-7060
32156	William Mandir	202-293-7060
32197	Mark Boland	202-293-7060
32607	John Callahan	202-663-7387
32765	Brett Sylvester	202-293-7060
32778	Brian Hannon	202-293-7060
33725	Bruce Kramer	202-663-7951
36787	Michael Dzwonczyk	202-293-7060
38584	John Rabena	202-663-7472
39283	J Lytle Jr	202-293-7060
40766	Carl Pellegrini	202-663-7485
41157	Christopher Lipp	202-663-7425
41239	Susan Pan	202-663-7373
43042	Ellen Smith	202-293-7060
43078	Raja Saliba	202-663-7468
46027	John Bird	202-775-7584
47121	Keiko Takagi	202-293-7060
53892	Sunhee Lee	202-775-7588
54666	Andrew Taska	202-857-3217
55154	David Emery	301-299-2385
57070	Thomas Sexton	202-663-7422
57426	Hui Wauters	202-663-7430
58308	Kevin Kunzendorf	202-663-7375
60447	Soumya Panda	703-412-7053
60719	Peter Park	202-857-3358
61124	Seok Won Lee	202-293-7060
61444	Michael Raucci	202-293-7060
61973	Fadi Kiblawi	202-663-7386
62499	Ebenesar Thomas	202-857-3235
62812	Ian Barras	202-663-7906
65399	Nelson Runkle	202-293-7060
65471	Andrew Yeretsky	202-663-7440
68485	Il Nam Koh	202-775-7508
68517	Brian Repper	703-836-6400
70362	Thomas Negley	863-207-22201
71831	Christian Lapense Ii	202-293-7060
72208	Maki Saitoh	202-663-7958
72682	Joshua Dean	202-663-7470
72943	Tyler Del Rosario	202-857-2257
73409	Aiyda Ghahramani	202-663-7429
73454	Daegunn Jei	202-731-3882
73602	Yejin Kim	202-663-7433
74061	Sujin Park	202-775-7524
74833	Hyunseok Park	202-663-7434
75180	Lawrence Rachuba Ii	202-663-7945
77233	Gleb Savich	919-448-4242
78445	Young Sun Kwon	202-775-7513
78891	Javier Liceaga	202-293-7060
78937	Jae Seok Ahn	202-663-7367
80511	Stephanie Kalen	202-857-2247
80625	Emmanuel Psihountas	913-850-0023
80904	Paul Smith	202-293-7060
81698	Michael Tomczak	815-690-2338
82017	Derek True	202-663-7931
L1355	Janvi Shah	202-293-7060

Proceeding Documents

200

Final Written Decision: JUDGMENT Final Written Decision Determining Challenged Claim Unpatentable 35 U.S.C. § 318(a) Denying Patent Owner’s Revised Contingent Motion to Amend 35 U.S.C. § 316(d) FINAL

2026-09-08 FILING PARTY: BOARD

Download

Other: Hearing transcript OTHER

2026-08-10 FILING PARTY: BOARD

Download

Petitioner's Notice of Filing Revised Demonstrative Exhibits NOTICE

2026-06-08 FILING PARTY: PETITIONER

Download

1077

Petitioner's Revised Demonstrative Exhibits Exhibit

2026-06-08 FILING PARTY: PETITIONER

Download

Patent Owner's Updated Exhibit List NOTICE

2026-06-04 FILING PARTY: PATENT OWNER

Download

Charles River Laboratories, Inc. vs. Seikagaku Corporation

Proceeding Overview

Parties & Counsel

Petitioner

Charles River Laboratories, Inc.

Represented By

Patent Owner / Respondent

Seikagaku Corporation

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Final Written Decision: JUDGMENT Final Written Decision Determining Challenged Claim Unpatentable 35 U.S.C. § 318(a) Denying Patent Owner’s Revised Contingent Motion to Amend 35 U.S.C. § 316(d) FINAL

Other: Hearing transcript OTHER

Petitioner's Notice of Filing Revised Demonstrative Exhibits NOTICE

Petitioner's Revised Demonstrative Exhibits Exhibit

Patent Owner's Updated Exhibit List NOTICE

Patent Owner's Oral Hearing Demonstratives Exhibit

Petitioner's Demonstrative Exhibits Exhibit

Petitioner's Notice of Filing Demonstrative Exhibits NOTICE

Petitioner's Sur-Reply in Support of Opposition to Patent Owner's Revised Contingent Motion to Amend OTHER

Petitioner's Responsive Supplemental Brief OTHER

PO Suppl Br on Teva v Lilly - IPR2025-00440 OTHER

Patent Owner's Reply to Petitioner's Opposition to Patent Owner's Revised Contingent Motion to Amend REPLY

Order: Setting Oral Argument ORDER

Petitioner's Opposition to Patent Owner's Revised Contingent Motion to Amend OPPOSITION

Notice of Filing Transcript of April 29, 2026 Conference Call NOTICE

Transcript of April 29, 2026 Conference Call Exhibit

Order: Conduct of Proceeding ORDER

Ex. 3005 Attorney Correspondence Exhibit

Petitioner's Request for Oral Argument OTHER

Patent Owner's Request for Oral Argument OTHER

Order: REVISED SCHEDULING ORDER ORDER

Patent Owner Sur-Reply OTHER

Patent Owner's Revised Contingent Motion to Amend MOTION

Second Declaration of Brian C. Schaefer, Ph.D. Exhibit

Preliminary Guidance Patent Owner's Motion to Amend ORDER

Petitioner's Opposition to Patent Owner's Motion to Amend OPPOSITION

Transcript of February 12, 2026 Deposition of Brain Schaefer, Ph.D. Exhibit

Huaman et al., Viruses. 2023 Aug 24;15(9):1797. Exhibit

Second Declaration of Siddhartha Jain, Ph.D., PMP Exhibit

Transcript of February 13, 2026 Deposition of Brain Schaefer, Ph.D. Exhibit

Petitioner's Reply to Patent Owner's Response REPLYTOOPP

Transcript of January 28, 2026 Deposition of Tina Morris, Ph.D. Exhibit

Order: Denying Patent Owner’s Motion for Additional Discovery as Moot ORDER

Ex. 3004 Exhibit

Notice of Deposition of Tina Morris, PhD NOTICE

Notice of Stipulation of Change to Due Dates 2 & 3 OTHER

Notice of Deposition of Brian C. Schaefer, PhD NOTICE

E-mail modifying scheduling order Exhibit

Declaration of Wan-Shon Lo Exhibit

Dubczak, J., Charles River Laboratories PDA Letter (2018) Exhibit

Clustal Alignments of Factor C Exhibit

Cheng, et al., Biochimica et Biophysica Acta (1986) Exhibit

Yoneda, et al., J Immunol Methods (2011) Exhibit

Graphical Depiction of Factor C Sequences Exhibit

European Pharmacopoeia 5.0 Exhibit

Tamura, H., EC Bacterio Virol Rsch (2016) Exhibit

U.S. Patent No. 10,473,663 Exhibit

Schaefer, et al., Analytical Biochem (1995) Exhibit

NCBI Nucleotide search results Exhibit

Reid, et al., Life Sci (2003) Exhibit

Sievers, et al., Mol Sys Bio (2011) Exhibit

ORCID entry for Shun-ichiro Kawabata Exhibit

Strong, et al., Biochim Biophys Acta (1995) Exhibit

Minetti, et al., J Biol Chem (1991) Exhibit

Declaration of Brian C. Schaefer, Ph.D. Exhibit

Zhu, et al., Mol Biol Rep (2008) Exhibit

Blackburn, et al., Dev Dyn (2008) Exhibit

Pharmacopeial Discussion Group Exhibit

Novitsky, et al., Limulus Endotoxin Test (2005) Exhibit

Rose, et al., J Biol Chem (2002) Exhibit

Curriculum vitae of Brian C. Schaefer, Ph.D. Exhibit

Muta, et al., J. Biol Chem. 268(28) 21384-88 (1993) Exhibit

Ding, et al., Ch. 9, 187-208 (2010) Exhibit

Novitsky, T.J., Springer Sci Bus Media, LLC (2010) Exhibit

NLM GenBank and SRA Data Processing Exhibit