Yasuo Kamatani, et al v. Benq Inc, No. 2:03-cv-00437 (E.D. Tex. Oct. 4, 2005)

From the Opinion

The passage below is extracted verbatim from the opening of the document. It has not been editorially summarized — consult the full opinion for the court's complete reasoning.

1. Introduction. In this patent infringement case, the plaintiffs, Yasuo Kamatani and Laserdynamics, Inc., sued the de fendants, BenQ Corporation and B enQ of America Corporation for infr ingement of United States Patent No. 5, 587,981. The patent-in-suit claims methods for discriminating between1 different types of optical disks inserted into an optical disk drive by reading total of contents data or processing an optical sig nal.