In the process of Chinese companies' development to overseas markets, they often encounter patent lawsuits, among which there are many professional patent organizations. Xiaomi has suffered from several lawsuits from sisvel before. Recently, the British Supreme Court ruled that Xiaomi did not infringe the patent of sisvel, and Xiaomi once again won.
According to iprdaily, on April 26, the UK High Court of justice made a judgment against the second patent ep1925142b1 (non confirmation mode header optimization technology related to radio link control) in the case of patent infringement and frand rate between sisvel, Xiaomi and oppo,It is found that Xiaomi and oppo do not infringe the LTE wireless communication patent technology claimed by sisvel.
Before that, Xiaomi had already won in Holland. Two temporary injunctions and one patent lawsuit initiated by sisvel were defeated by Xiaomi.
So far,Sisvel has not won many global lawsuits against two Chinese companies, Xiaomi and oppo. On the contrary, many of their patents have been invalid by Xiaomi and oppo. It will be more and more difficult to sue Chinese companies with these patents in the future.
In March 2019, sisvel filed a patent infringement lawsuit against Xiaomi, oppo and other enterprises in the UK High Court of justice on the grounds of infringement of three patents (ep1471657b1, ep1925142b1, ep2254259b1), and requested the court to rule the global frand license rate on the MCP patent pool of its necessary mobile communication standard patents.
The MCP patent pool contains more than 100 family 3 / 4G declaration standard essential patents from nearly 10 patentees.
Subsequently, sisvel expanded the patent litigation to many countries around the world, including Italy, the Netherlands, etc., and applied for a temporary ban on the sale of Xiaomi mobile phones in some countries.
However, sisvel did not win a victory. Xiaomi responded positively, filed Counterclaims in China, and filed invalid claims against several sisvel patents.
Finally, in June this year, Xiaomi won. Six patents of sisvel were found invalid, and one patent was partially invalid.
In 2020, in the Netherlands, the court of first instance and the court of appeal all ruled that sisvel lost the lawsuit, holding that Xiaomi did not infringe the patent.
At present, in the global patent litigation, many patents owned by sisvel are invalid, and the remaining patents are owned by Mitsubishi, a patent pool company, which will be at a disadvantage in the future trial.