A Commonwealth research organisation has won its patent infringement lawsuit against wireless vendor Buffalo.

A federal judge in Texas yesterday granted summary judgement in favour of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and demanded Buffalo pay it a royalty rate to be decided at an upcoming court date.

The CSIRO filed the test case against Buffalo in February last year claiming it has infringed its wireless LAN patent, granted in 1996. CSIRO chief executive Dr Geoff Garrett said the judgment was important as it "supported CSIRO's position comprehensively".

"We are obviously very pleased," Garrett said, "however, it is only a brick in the wall and CSIRO still has a long way to go." Garrett said the market for wireless LAN (WLAN) products is large and growing, and many manufacturers are using CSIRO's technology without permission or any licence fee.

CSIRO has a number of other ongoing patent infringement cases.