Complaint for Patent Infringement
Civil Action No. 4:12-cv-05996-KAW, the Hon. Kandis A. Westmore presiding.
Filed on Nov. 26, 2012 in the U.S. District Court for the Northern District of California;

Patents in case

• 6,587,204: “Application of a step-phase interferometer in optical communication” by Hsieh. Prosecuted by Wooldridge; John P.. Includes 46 claims (3 indep.). Was application 09/801,335. Granted 7/1/2003.
• 7,522,343: “Michelson interferometer based delay line interferometers” by Hsieh. Prosecuted by Wooldridge; John P. Durando; Antonio R.. Includes 13 claims (4 indep.). Was application 11/485,653. Granted 4/21/2009.