WASHINGTON (Bloomberg) - International Business Machines Corp. (IBM) lost its bid to ban US imports of computer motherboards and graphics cards made by Taiwan's Asustek Computer Inc.

The US International Trade Commission in Washington said on Monday it would not review a March finding that Asustek didn't infringe three IBM patents. The decision was posted on the agency's website.

IBM, based in Armonk, New York, had claimed that Asustek is using its patented technology for improved power supplies to computers, a cooling system and a way of clustering computers together so they operate as a single unit. Asustek is the world's largest supplier of the boards that connect computer components.

In addition to the motherboards and graphics cards, IBM was seeking to bar the imports of computers that contain the Asustek products.

"We respect the court ruling," Nick Wu, a spokesman for Taipei-based Asustek, said by phone yesterday. Mr. Wu said the company will continue to sell computer motherboards and graphic cards in the US. A spokesman for IBM did not return messages seeking comment on Monday.