Tianma Microelectronics Co., Ltd. et al. vs. LG Display Co., Ltd.

Explore the PTAB proceeding IPR2025-01579 filed by Tianma Microelectronics Co., Ltd. et al. on 2025-10-23. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-01579

Filing Date

2025-10-23

Accorded Filing Date

2025-10-23

Institution Decision Date

2026-03-18

Last Modified Date

2026-09-03

Proceeding Type

IPR

Termination Date

2026-03-18

Trial Status

Discretionary Denial

Parties & Counsel

Petitioner

Tianma Microelectronics Co., Ltd. et al.

Represented By

Goldberg, Joshuaet al

Patent Owner / Respondent

LG Display Co., Ltd.

Represented By

Bonner, Amandaet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 2800 - Semiconductors, Electrical & Optical Systems

Patent Information

1 Patent Involved

Respondent Application Number 16907966

Respondent Patent Number 11251394

External Links

Espacenet

Google Patents

Respondent Inventor Jae-Young OH

Respondent Tech Center TC 2800 - Semiconductors, Electrical & Optical Systems

Address and Attorney/Agent Information

40 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name BIRCH STEWART KOLASCH & BIRCH, LLP

Customer Number 2292

Address 2600 Park Tower Drive, Suite 600, Vienna, VA, 22180-7371, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
22463	Joseph Kolasch	703-205-8000
28380	James Slattery	703-205-8000
28977	Gerald Murphy Jr	703-205-8000
29271	Charles Gorenstein	703-205-8000
29680	Michael Mutter	703-205-8000
30330	Leonard Svensson	858-792-8855
32181	Marc Weiner	703-205-8000
32868	Andrew Meikle	703-205-8000
32881	Johnny Bailey	703-205-8000
39538	James Eller Jr	703-205-8000
40069	Mary Anne Armstrong	703-205-8000
40417	Maki Hatsumi	703-205-8000
40439	David Anderson Jr	703-205-8000
40953	Esther Chong	703-205-8000
41533	Christopher Mcdonald	703-205-8000
42325	David Bilodeau	703-205-8072
42874	Craig Mcrobbie	703-208-4002
43368	Paul Lewis	703-205-8000
43451	Laura Lutz	703-205-8000
47099	Michael Smith	304-624-8000
47260	Michael Britton	703-838-6529
47305	Jason Rhodes	703-205-8000
48501	Eugene Perez	703-205-8000
48917	Chad Billings	703-205-8000
50875	Chad Wells	703-205-8000
52327	Catherine Voisinet	703-205-8000
54577	Seth Kim	703-205-8000
58258	Chad Rink	703-205-8000
58565	James Larsen	425-298-6846
59981	Whitney Remily	703-205-8083
60738	Christopher Wheeler	310-822-2679
61007	Cheng Kang Hsu	703-205-8000
63406	Bradford Fritz	703-836-6505
67246	Eric Liou	703-205-8000
68859	Toyohiko Konno	703-205-8000
75395	Reed Risenmay	202-457-7523
76455	Qing Lin	703-205-8085
78391	Hyuk Jung Kwon	703-205-8000
78681	Atsushi Nakamura	703-205-8000
79684	Joseph Anderson	631-901-5580

Proceeding Documents

Petitioner's Request for Refund of Post-Institution Fee OTHER

2026-09-03 FILING PARTY: PETITIONER

Download

Notice of Refund NOTICE

2026-09-03 FILING PARTY: BOARD

Download

Director Discretionary Decision: Deny RESPONSE

2026-03-18 FILING PARTY: BOARD

Download

Director Discretionary Decision: Deny RESPONSE

2026-02-18 FILING PARTY: BOARD

Download

1012

Notice of Availability of Designation of Chinese Military Companies Exhibit

2026-01-30 FILING PARTY: PETITIONER

Download

Tianma Microelectronics Co., Ltd. et al. vs. LG Display Co., Ltd.

Proceeding Overview

Parties & Counsel

Petitioner

Tianma Microelectronics Co., Ltd. et al.

Represented By

Patent Owner / Respondent

LG Display Co., Ltd.

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Petitioner's Request for Refund of Post-Institution Fee OTHER

Notice of Refund NOTICE

Director Discretionary Decision: Deny RESPONSE

Director Discretionary Decision: Deny RESPONSE

Notice of Availability of Designation of Chinese Military Companies Exhibit

Huang Declaration Exhibit

Notice of Availability of Designation of Chinese Military Companies Exhibit

Patent Owner Preliminary Response to Petition for Inter Partes Review of U.S. Patent No. 11,251,394 POPR

Petitioner's Updated Exhibit List NOTICE

Kim481 Global Dossier Exhibit

Petitioner's Opposition to Patent Owner's Request for Discretionary Denial of Institution RESPONSE

Zhang Declaration Exhibit

About Us, Tianma Microelectronics Co., Ltd. Exhibit

LG Display Co., Ltd. v. Tianma Microelectronics Co., Ltd. et al., Case 5-25-cv-00078 (E.D. Tex. Nov. 18, 2025) Docket Control Order Exhibit

October 29, 2021 LG Display Patent List to Tianma Exhibit

Communist Chinese Military Companies Listed Under E.O. 13959 Have More Than 1,100 Subsidiaries, Jan. 14, 2021 Exhibit

LG Display Wins SID Display Week 2024’s ‘Special Recognition Award’ Exhibit

Letter from NLT to LG Display dated September 20, 2011 Exhibit

Screenshot of Security Warning Exhibit

Fitch Affirms AVIC Innovation at 'A-; Outlook Stable, June 27, 2025 Exhibit

LG Display TOE Patent List Exhibit

15 C.F.R. § 744, Supp. No. 4 Exhibit

LG Display Co., Ltd. v. Tianma Microelectronics Co., Ltd. et al., Case 5-25-cv-00078 (E.D. Tex. Jun. 13, 2025) Complaint Exhibit

LG Display Wins Technology Award for its OLED TV Panels at HiVi Grand Prix 2022 Exhibit

U.S. Patent No. 11,088,350 Exhibit

Letter to the Department of Defense from the House of Representatives dated September 24, 2024 Exhibit

Letter from LG Display to Tianma dated October 30, 2015 Exhibit

2025 SID Honors & Awards Exhibit

Tianma Microelectronics, Co., Ltd. v. Japan Display Inc. and Panasonic Liquid Crystal Display CO., IPR2016-00990, Paper 1 (April 29, 2016) Exhibit

DIA Awards Archive Exhibit

Letter from LG Display to Tianma dated October 16, 2020 Exhibit

Brief in Support of Patent Owner's Request for Discretionary Denial RESPONSE

Adam Mossoff, Google’s Loss to Sonos Settles It: Big Tech Has an IP Piracy Problem, Jan. 14, 2022 Exhibit

Catic Shenzhen Company Profile Exhibit

OLED Shelf Exhibit

Tianma Microelectronics Co., Ltd. et al., v. LG Display Co., Ltd., et al., Case 1:25-cv-02021 (W.D. Tex. Dec. 9, 2025) Corporate Disclosure Statement Exhibit

Litigation Stipulation NOTICE

Notice: Mandatory Notice NOTICE

Notice: Power of Attorney NOTICE

NOTICE OF FILING DATE ACCORDED TO PETITION AND TIME FOR FILING PATENT OWNER PRELIMINARY RESPONSE NOTICE

US20160313837A1(Zhu837) Exhibit

Petitioner Power of Attorney and Designation of Lead and Backup Counsel NOTICE

US20120062481A1 (Kim481) Exhibit

US20160378224A1 (Kwon224) Exhibit

Petition for Inter Partes Review PETITION

US11251394 ('394 patent) Exhibit

US20170090651A1 (Kang651) Exhibit

Flasck Declaration Exhibit

CV of Richard A Flasck Exhibit

US20160170524A1 (Kim524) Exhibit

US20130278513A1(Jang513) Exhibit

2292_16907966 - '394 patent FH Exhibit