On March 5, 2026, Wilson Sonsini Goodrich & Rosati secured a complete jury victory in a patent invalidity trial in the U.S. District Court for the Northern District of California on behalf of firm client Cyntec Company, Ltd. Rejecting defendant Chilisin’s arguments on obviousness, the jury found that all asserted claims of Cyntec’s U.S. Patent Nos. 8,922,312 and 9,481,037 were valid. Wilson Sonsini also represented Cyntec in a previous jury trial which had found that Chilisin willfully infringed both patents and imposed a 5 percent royalty. 

This is a significant victory for Cyntec, whose molding choke inventions are critical to the operation of virtually all mobile devices, including smartphones, tablets, and laptops.

The Wilson Sonsini trial team representing Cyntec consisted of James Yoon, Lucy Yen, Christopher Mays, Celine Liu, Jeff Nall, Obie Reynolds, and LeAnn Woo.