Matsushita, General Patent Strike Licensing Deal Involving Digital Output Transducer Patent

SUFFERN, N.Y., December 23, 2008 - General Patent Corporation (GPC), a leading patent licensing and enforcement firm, announced today on behalf of its client, Digital Technology Licensing LLC (DTL), that it has licensed a key cell phone patent to Matsushita Electric Industrial Co., Ltd. of Osaka, Japan. Matsushita products are sold in the US under the Panasonic brand.

DTL owns U.S. Patent No. 5,051,799 titled “Digital Output Transducer” (Patent), which is an essential patent for Adaptive Multi-Rate (AMR) codec and other cellular communication standards. The patented technology is also used to assure backward compatibility of cell phone handsets and base stations. Other applications of this patented technology include Bluetooth headsets.

“We are very pleased to extend a license under the DTL patent to Matsushita,” said Paul Lerner, GPC’s Sr. Vice President and General Counsel.

General Patent Corporation represents DTL in the licensing and enforcement of this Patent. DTL brought patent infringement suits against Verizon Wireless, Cingular Wireless (now known as AT&T Mobility), Matsushita, T-Mobile, Sprint and other companies. GPC previously announced that Nokia, Ericsson, Sony-Ericsson, Samsung and LG had licensed DTL’s Patent, and that the lawsuits against Cingular Wireless, AT&T Mobility, and Motorola had been settled.

About Digital Technologies Licensing LLC

Digital Technology Licensing LLC (DTL), of Suffern, N.Y., is the owner of U.S. Patent No. 5,051,799 titled “Digital Output Transducer.” DTL is a portfolio company of IP Holdings LLC and is managed by General Patent Corporation. A non-exclusive license under the patent is available on reasonable and non-discriminatory terms. For licensing terms, please contact Paul Lerner at (845) 368-4000 x104. For more information, please visit

About IP Holdings LLC

IP Holdings LLC, an affiliate of General Patent Corporation, is an IP-centric merchant banking organization. IP Holdings provides IP-related financial services as well as IP brokerage services. IP Holdings also operates an idea incubator. IP Holdings is a member of DTL. For more information on IP Holdings visit