Power Electronics

Court Upholds Power IC Patent Claims

Power Integrations (www.powerint.com), has announced that it has won a favorable decision in its patent-infringement case against System General (SG), which was filed last year with the U.S. International Trade Commission (ITC). The administrative law judge hearing the case has ruled that certain of SG's power-supply controllers infringe Power Integrations U.S. Patent Nos. 6,351,398 and 6,538,908, and that SG is therefore in violation of section 337 of the Tariff Act of 1930. All claims of the two Power Integrations patents asserted at trial were upheld by the judge.

In conjunction with his decision, the judge has recommended that the ITC issue an exclusion order against SG's infringing products, and against LCD monitors and ac printer adapters containing the infringing parts. The exclusion order would prohibit the importation of these products into the United States. If the ITC adopts the judge's decision, SG must pay a bond of 38 cents for each imported infringing chip and each imported product containing an infringing chip during the subsequent period of Presidential review. Power Integrations believes that the infringing chips, which include the SG6840, SG6841, SG6841x3, SG6842, SG6842J and SG6843, represent a significant percentage of SG's sales.

Power Integrations filed its complaint with the ITC in May 2005. Earlier, in June 2004, the company had filed a patent-infringement lawsuit against SG in the Federal District Court in San Francisco. In that lawsuit, which has been stayed pending the final decision of the ITC, the company will seek an injunction against all SG products that infringe Power Integrations patents, including SG6848 and SG6849, as well as newer parts not subject to the ITC decision. Power Integrations is also seeking financial damages in the San Francisco case.

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