Bio-Rad Laboratories, Inc. vs. California Institute of Technology

Explore the PTAB proceeding IPR2025-01546 filed by Bio-Rad Laboratories, Inc. on 2025-09-15. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-01546

Filing Date

2025-09-15

Accorded Filing Date

2025-09-15

Institution Decision Date

2026-03-10

Last Modified Date

2026-04-10

Proceeding Type

IPR

Termination Date

2026-03-10

Trial Status

Institution Denied

Parties & Counsel

Petitioner

Bio-Rad Laboratories, Inc.

Represented By

Walter, Dereket al

Patent Owner / Respondent

California Institute of Technology

Represented By

Salen, Jesseet 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 18352112

Respondent Patent Number 12168797

External Links

Espacenet

Google Patents

Respondent Inventor Emil P. KARTALOV et al

Respondent Tech Center TC 1600 - Biotechnology & Organic Chemistry

Address and Attorney/Agent Information

30 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name Sheppard, Mullin, Richter & Hampton LLP

Customer Number 30764

Address 650 Town Center Drive, 10th Floor, Costa Mesa, CA, 92626, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
32694	James Gatto	202-747-1900
34853	Stephen Korniczky	858-720-7443
36727	Daniel Yannuzzi	858-720-8924
38768	Timothy Epp	714-513-5100
40823	Marc Sockol	650-815-2602
42651	David Heisey	858-720-8900
42723	John Keville	713-431-7113
50782	Lorna Tanner	650-815-2658
50861	Susan Hwang	213-620-1780
54736	Martin Bader	858-720-7446
55199	Huanyong Gao	213-620-1780
56160	Harper Batts	650-815-2673
59198	Jaime Choi	858-876-3545
60523	Alex Nie	650-815-2600
61878	Weiguo Chen	650-815-2692
69644	Jonathan Marina	626-203-8090
70746	Iiona Wheat	412-759-4361
70890	Xin Xie	703-597-4249
71561	Dominique Combs	858-720-8900
72209	Jesse Salen	858-720-8964
74113	Brian Restauro	202-747-1852
75019	Michael Hopkins	630-596-3680
75191	Jie Zheng	650-352-1962
78910	Theodore Mayer	973-626-1119
79121	James Hurt	858-720-8959
80050	Pengju Shang	650-815-2600
80496	Joshua Weisenfeld	507-995-2247
81142	Samantha Young	858-720-7459
82092	Samuel Smith	202-747-1896
82810	Fangzhou Qiu	650-815-2652

Proceeding Documents

Institution Decision: Deny DECISION

2026-03-10 FILING PARTY: BOARD

Download

Patent Owner's Reply to Petitioner's Supplemental Brief Regarding Claim Construction Pursuant to Board's February 12, 2026 Order OTHER

2026-02-23 FILING PARTY: PATENT OWNER

Download

Petitioner's Supplemental Brief Regarding Claim Construction for U.S. Patent No. 12,168,797 Pursuant to Board's February 12, 2026 Order OTHER

2026-02-18 FILING PARTY: PETITIONER

Download

1038

EX1038 Exhibit

2026-02-18 FILING PARTY: PETITIONER

Download

3001

E-mail authorizing briefing Exhibit

2026-02-12 FILING PARTY: BOARD

Download

Bio-Rad Laboratories, Inc. vs. California Institute of Technology

Proceeding Overview

Parties & Counsel

Petitioner

Bio-Rad Laboratories, Inc.

Represented By

Patent Owner / Respondent

California Institute of Technology

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Institution Decision: Deny DECISION

Patent Owner's Reply to Petitioner's Supplemental Brief Regarding Claim Construction Pursuant to Board's February 12, 2026 Order OTHER

Petitioner's Supplemental Brief Regarding Claim Construction for U.S. Patent No. 12,168,797 Pursuant to Board's February 12, 2026 Order OTHER

EX1038 Exhibit

E-mail authorizing briefing Exhibit

Director Discretionary Decision: Refer RESPONSE

Petitioner's Supplemental Brief in Support of Opposition to Request for Discretionary Denial of Institution OTHER

EX1037 Exhibit

Joint Case Management Statement and Proposed Order (Dkt. 139) Exhibit

Minute Order (Dkt. 141) Exhibit

Patent Owner's Reply to Petitioner's Opposition to Discretionary Denial OTHER

Email Correspondence Exhibit

EX1036 Exhibit

Patent Owner's Preliminary Response POPR

Plaintiffs California Institute of Technology and ChromaCode, Inc.’s Responsive Claim Construction Brief for The '797 Patent, In re: ChromaCode Litigation, Case No. 5:23-cv-04823, N .D. Cal. Exhibit

EX1035 Exhibit

EX1034 Exhibit

Opposition to Request for Discretionary Denial of Institution RESPONSE

Part 1 of 2 - File history of U.S. Patent No. 12,168,797 Exhibit

Declaration of Bernhard H. Weigl, Ph.D. Exhibit

Curriculum Vitae of Bernhard H. Weigl, Ph.D. Exhibit

Part 2 of 2 - File history of U.S. Patent No. 12,168,797 Exhibit

EX1033 Exhibit

Plaintiffs California Institute of Technology and ChromaCode, Inc.’s Opening Claim Construction Brief for the '797 Patent, In re: ChromaCode Litigation, Case No. 5:23-cv-04823, N .D. Cal. Exhibit

EX1032 Exhibit

In re: ChromaCode Litigation, Case No. 5-23-cv-04823, Dkt. 160 (NDCA Oct. 29, 2025) Exhibit

Case Timing Statistics for Northern District of California, exported from Docket Navigator on November 7, 2025 Exhibit

Bio-Rad, Inc.’s Invalidity Contentions, served on August 13, 2025 Exhibit

U.S. Patent No. 10,068,051 Exhibit

In re: ChromaCode Litigation, Case No. 5-23-cv-04823, Dkt. 124 (NDCA July 2, 2025) Exhibit

U.S. Patent No. 10,770,170 Exhibit

In re: ChromaCode Litigation, Case No. 5-23-cv-04823, Dkt. 160 (NDCA Oct. 29, 2025) Exhibit

In Re ChromaCode Litigation, 5-23-cv-04823, Dkt. 125 (NDCA July 22, 2025) Exhibit

ChromaCode Inc. v. Bio Rad Laboratories, Inc., Case No. 2-23-cv-08417, Dkt. 1 (CDCA Oct. 5, 2023) Exhibit

Patent Owner's Request for Discretionary Denial of Institution RESPONSE

Notice of Allowance for U.S. Patent No. 11,827,921, mailed October 23, 2023 Exhibit

Declaration by Jesse Salen Exhibit

ChromaCode Inc. v. Bio Rad Laboratories, Inc., Case No. 2-23-cv-08417, Dkt. 12 (CDCA Oct. 13, 2023) Exhibit

U.S. Patent No. 11,827,921 Exhibit

Notice of Allowance for U.S. Patent No. 10,068,051, mailed July 11, 2018 Exhibit

Director’s Memo on Interim Processes for PTAB Workload Management, dated March 26, 2025 Exhibit

Notice of Allowance for U.S. Patent No. 10,770,170, mailed May 4, 2020 Exhibit

California Institute of Technology v. Bio-Rad Laboratories, Inc., Case No. 5-25-cv-01701, Dkt. 1 (NDCA Feb. 18, 2025) Exhibit

ChromaCode Inc. v. Bio Rad Laboratories, Inc., Case No. 2-23-cv-08417, Dkt. 34 (CDCA Dec. 7, 2023) Exhibit

In Re ChromaCode Litigation, 5-23-cv-04823, Dkt. 151 (NDCA Sept. 22, 2025) Exhibit

Information Disclosure Statement filed for U.S. Patent Application No. 18/352,112, initialed December 30, 2023 Exhibit

In Re ChromaCode Litigation, 5-23-cv-04823, Dkt. 152 (NDCA Sept. 26, 2025) Exhibit

In re: ChromaCode Litigation, Case No. 5-23-cv-04823, Dkt. 121 (NDCA June 18, 2025) Exhibit

Notice of Allowance for U.S. Patent No. 12,168,797, mailed November 18, 2024 Exhibit

Notice: Mandatory Notice NOTICE

Notice: Power of Attorney NOTICE

Notice: Notice filing date accorded NOTICE

EX 1015 - Shivaprasad Exhibit

EX 1023 - Nucleic Acids Exhibit

EX 1020 - Wittwer Exhibit

EX 1024 - Intro to Molecular Beacons Exhibit

EX 1001 - U.S. 12,168,797 Exhibit

EX 1016 - Deposition of Dr. Struhl Exhibit

EX 1027 - '051 IDS Exhibit

EX 1008 - Brabetz Exhibit

EX 1019 - Dube Exhibit

EX 1030 - '797 IDS Exhibit

EX 1022 - Lehnen Exhibit

EX 1003 - Jouvenot Exhibit

EX 1013 - Larson Exhibit