Unwired Planet International Ltd v Huawei Technologies Co Ltd & Ors [2016] EWHC 576 (Pat) Trial C
This was the third technical trial in the mobile telecommunications patent case between Unwired Planet and Huawei & Samsung, concerning Unwired Planet’s patent portfolio.
The patent in issue was entitled “Method for improving handovers between mobile communication systems” and concerned handover between different radio access technologies including GSM (2G), UMTS (3G) and LTE (4G).
Unwired Planet alleged that the patent was essential to two versions of the GSM standard. Huawei and Samsung counterclaimed that the patent was invalid for insufficiency, obviousness and added matter.
Birss J held that the patent was valid and essential.
Iain Purvis QC, jointly instructed by Powell Gilbert LLP and Bristows LLP, appeared for Huawei and Samsung. Kathryn Pickard, instructed by Powell Gilbert LLP, appeared for Huawei.