AUSTIN, Texas -- Cirrus Logic Inc. today (Oct. 14, 2003) said it has filed a complaint with the U.S. International Trade Commission (ITC) against Wolfson Microelectronics plc over chip patents.
Cirrus hopes the ITC will initiate an investigation of Wolfson for violation of Section 337 of the Tariff Act of 1930. The Austin-based chip maker hopes to block the U.S. imports of certain digital-to-analog converters and other products containing such converters from Wolfson of the United Kingdom.
If the ITC supports Cirrus Logic's claim, the ITC could issue a permanent exclusion order banning the importation into the United States of the alleged infringing products and a cease-and-desist order halting the sale of such infringing products, as well as such other and further relief the ITC deems proper.
The ITC is being asked to investigate whether certain Wolfson products infringe one or more of the claims of U.S. Patent No. 6,492,928. Cirrus Logic claims that it is the exclusive owner of the patent and asserts, based on its investigation and analysis, that the following Wolfson products are infringing: WM8706, WM8716, WM8718, WM8719, WM8726, WM8727, WM8728, WM8729, WM8740, WM8746, WM8756, WM8759, WM8761, WM8762 and WM8772.
These same products are the subject of a federal district court lawsuit filed by Cirrus Logic last week in the U.S. District Court for the Southern District of California (see October 9 story).