Patent Law Practice Center

Requests Against Three Philips’ Green LED Patents Among Those Filed Week Of 8/29/11

Here is the latest installment of Reexamination Requests from Scott Daniels, of Reexamination Alert and Practice Center Contributor…

The war between Koninklijke Philips and Seoul Semiconductor over “green” light-emitting diodes (LEDs) intensified last week when Seoul Semi requested reexamination of three Philips’ patents – U.S. Patent No. 6,274,924, 6,547,249 and 6,590,235 (see inter partes Request Nos. (3) & (4) and ex parte Request No. (6)).  Philips has accused Seoul Semi in the Northern District of California of infringing the ‘249 and ‘235 patents, plus two other patents, and Seoul Semi has counter-claimed for infringement of one of its own patents.

The following inter partes requests were filed:

(1)         95/001,730 (electronically filed) – U.S. Patent No. 6,405,704 entitled INTERNAL COMBUSTION ENGINE WITH LIMITED TEMPERATURE CYCLE and owned by Kruse.  Filed August 29, 2011, by Ford.  The ‘704 patent is currently the subject of two litigations styled Kruse Tech. Part. v. Daimler AG(Case No. 8:10-cv-1215 (C.D. Cal.)); Kruse Tech. Part. v. Ford(Case No. 8:10-cv-1066 (C.D. Cal.)). (more…)