SAN JOSE, USA: Responding to the complaint filed earlier this year, Japan's Elpida Memory Inc. went on ahead filing a suit against Infineon Technologies AG and Best Buy Co. Inc.

It was reported earlier during the year, chipmaker Infineon Technologies (Munich, Germany) filed a complaint with the U.S. International Trade Commission (ITC) against Elpida (Tokyo), seeking to prevent Elpida from importing and selling some DRAMs in the United States.

In return Elpida too filed a suit this month in the U.S. District Court for the Eastern District of Virginia against Infineon Technologies, its subsidiary Infineon Technologies North America Corp., and Best Buy for attempting to infringe Elpida patents related to semiconductor integrated circuits.

Elpida asserts that Infineon and other defendants ''are engaged in infringing activities through the manufacture, use, offering for sale, or importing Infineon's microcontrollers which are used in mobile devices.''

Elpida seeks a permanent injunction enjoining the defendants from any infringing of the Elpida patents and compensation from the defendants for doing so in their complaint.

The company was propelled into high profits with its average selling price for PC DRAMs increasing to 30 percent in comparison to its earlier quarter Elpida's PC DRAM product sales increased in its third financial quarter, ending Dec. 31, 2009.

Following its planned agreement in Taiwan appears to have fallen apart - or has been scrapped - Japanese DRAM manufacturer Elpida freshly formulated a latest plan to increase its money. Elpida plans to raise about $200 million with the help of sale of new shares and convertible bonds to memory module manufacturer Kingston Technology Inc.

This entire move shall provide Kingston with a 4.79 percent stake in Elpida. This financial support shall be used to promote Elpida's 300-mm fab in Hiroshima to 40-nm technology.

Recently Spansion Inc. accepted that Japan's Elpida acquired a part of its research and development assets, although declined to offer any additional details, including the worth of the entire deal.