SPT Takes Action Against Transsion Over Video Codec Patent
On July 16, 2025——Today, Transsion Holdings (Stock Code: 688036) received its another patent litigation. The UPC has announced another patent infringement lawsuit involving Transsion.
The plaintiff is Sun Patent Trust (SPT), while the defendants include Shenzhen Transsion Holdings Co., Ltd., TECNO Mobile Limited, INFINIX Mobile Limited, and local distributors.
SPT filed the lawsuit with the UPC Mannheim LD last month, accusing Transsion of infringing a patent related to video coding and decoding technology—EP2903267 ("Image Encoding Method, Image Decoding Method, Image Encoding Apparatus, Image Decoding Apparatus, and Image Encoding/Decoding Apparatus"), with the case number ACT_28580/2025.
Prior to this, SPT had sued Roku, using the same patent.
In fact, this marks another patent enforcement action by SPT against Chinese smartphone companies in recent years.
Last month, the UPC disclosed two cases where SPT filed lawsuits against Chinese smartphone manufacturer vivo with the UPC Paris, accusing vivo of infringing two of its European LTE patents: EP3407524 ("Wireless Communication Terminal Device, Wireless Communication Base Station Device, and Resource Area Setting Method") and EP3852468 ("Base Station, Mobile Station, and Methods Thereof").
Earlier, SPT had also been involved in disputes with Chinese companies such as Xiaomi and OPPO.
In June 2024, Xiaomi was sued by SPT in France and India. Among these cases, SPT filed a request with the Tribunal Judiciaire de Paris in France to determine the global FRAND licensing rate with Xiaomi.
Notably, most of the patents SPT relies on originate from Panasonic of Japan.
The patent in the current lawsuit against Transsion, which relates to video coding and decoding and belongs to HEVC (High Efficiency Video Coding) technology, was also first filed by Panasonic.
Since SPT, like NEC, is a member of the HEVC Advance patent pool, Transsion now faces a choice: either reach bilateral licensing agreements with each relevant party or join the patent pool.
In addition, the UPC has also made public another notable case — Huawei v HMD, case no. ACT_25706/2025.
Huawei accuses HMD of infringing its 5G patent EP3667981, entitled "Method for Determining Feedback Information, Terminal Device, and Network Device".