SGI filed suit against ATI
The suit concerns patent no. 6,650,327, which details a "display system having floating point rasterization and floating point framebuffering." It was filed back in 1998, but not granted until 2003.
SGI claims that its patent covers technology in ATI's Radeon line of graphics cards. It also says that ATI was notified of this, but never responded, and continued to sell the cards.
"The Company's technology covered by the '327 patent is an important resource in achieving enhanced graphics processing demanded by today's computer systems," said Dennis McKenna, CEO of SGI. "SGI has licensed this technology to ATI's major competitors and, as I have previously been stating publicly, SGI intends to aggressively protect and enforce its IP. This is the first visible step in that process."
http://patft.uspto.gov/...
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