Context: In July 2025, Pantech, formerly one of South Korea’s three largest mobile handset makers, filed a complaint in the United States International Trade Commission (ITC) and sued five different implementers in the U.S. District Court for the Eastern District of Texas over the infringement of four 4G SEPs (July 4, 2025 ip fray article). The defendants include HMD, China’s TCL, OnePlus (an Oppo affiliate), Tinno (which rarely gets sued – although it was indirectly sued by Philips: November 12, 2024 ip fray article), and Lenovo. Pantech had already previously sued OnePlus over similar patents in the same court in June 2022, which resulted in jury findings of infringement, no invalidity, willfulness, and damages. Yet the defendant “refused to accept a license on FRAND terms or provide a reasonable counteroffer”, Pantech asserted at the time.
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Counsel
Pantech was represented by Patton Tidwell & Culbertson LLP’s Geoffrey Culbertson and Kelly Tidwell.
Tinno was represented by Jason Liang Xu of Rimon, P.C.
TCL was represented by Donald R McPhail of Vanguard Crest P.C., as well as Mayer Brown’s James A Fussell, III, Tiffany A. Miller, Clark Bakewell, Bryan Nese, Courtney Krawice, Wm. Brady Nash, Seth Bruneel, and Graham (Gray) Buccigross.
Lenovo was represented by Melissa Richards Smith of Gillam & Smith.
OnePlus was represented by Gregory Blake Thompson of Mann, Tindel, Thompson.
HMD is being represented by Matthew S Warren of Warren LLP.