SONY sued BYD battery patent case against SONY

Lasted more than two years, SONY sued BYD for patent infringement of the battery, and ultimately to come to an end against SONY. Recently, the reporter learned from the Byd Company Limited, the Japanese intellectual property rights of the high court sentenced SONY to provide a patent on the battery structure is invalid, the lawsuit ended in a lawsuit against SONY. Prior to July 2003, SONY Japan to the Tokyo District Court indictment, accusing BYD of infringing the two Japanese lithium-ion rechargeable battery patents, respectively for the thickness of the battery structure and materials of the patent. In January this year, the Japanese Patent Office made a ruling declaring that SONY battery structure patent invalid. In March this year, SONY to appeal to the Japanese intellectual property higher referee, but the final judgment of the Supreme Court of intellectual property rights in Japan to maintain the original verdict.

According to Xia Yebing, general manager of BYD sales, BYD is China's largest battery manufacturer, and beyond SONY, to become second only to SANYO, the world's second largest secondary battery manufacturers. Before SONY v. BYD, Japan's SANYO motor battery industry leader company in September 2002 to the United States District Court for the Southern District of California sued BYD and BYD America, accusing it of violating SANYO patents, and the battery charge to the United States banned the import and sale of BYD ion. And 9 months ago, the lawsuit ended in reconciliation.

"Chinese companies have become the norm for competition among companies by applying for patent invalidation to counter foreign multinationals." As the Chinese family litigation Patent Reexamination Board lawyer Chen Jianmin said, BYD's performance in patent disputes in recent years, enterprises should make the defense through the embodiment of patent applications, but also through other patent counterclaims back, at the same time, itself will often become the object of attack.