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Analog Devices sues Silicon Labs for patent infringement

Posted: 22 Dec 2006 ?? ?Print Version ?Bookmark and Share

Keywords:ADI? Silicon Lab? digital isolator? iCoupler? digital isolators?

DSP provider Analog Devices Inc. (ADI) has filed a lawsuit in the U.S. District Court of Massachusetts, in Boston, against Silicon Laboratories Inc. (SiLabs) for multiple patent infringement and copyright complaints. The complaint seeks unspecified damages and a court injunction against future infringement by SiLabs.

The complaint alleges that SiLabs' Si84xx product range infringes patents regarding the physical construction and signaling techniques of ADI's iCoupler digital isolation products. The complaint also alleges that SiLabs' datasheets infringe the copyright on ADI datasheets for the same product.

iCoupler digital isolators enable communication between separate electrical circuits while preventing current flow between them. The products are used in applications such as industrial instrumentation, power supplies, medical equipment, communication networks and flat-panel televisions.

"We started investing in this technology in 1997 and began selling products based upon it in 2001," said Margaret Seif, ADI's vice president and general counsel. "We are taking this action today to protect our intellectual property and our investment," At present, ADI has over 10 patents regarding its isolation components.

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