SUNNYVALE, Calif.--Proxim Inc. here promises to vigorously defend itself against counter suits filed by Agere Systems Inc. and Symbol Technologies Inc. in a growing legal fight over U.S. patents for high-speed wireless local area networks.
Proxim touched off the battle three months ago when it launched a licensing campaign and lawsuits aimed at enforcing patents on direct-sequence technology, which the company says is a key element in 2.4-GHz wireless LANs conforming to the IEEE 802.11b standard (see March 8 story). To date, Proxim said it has notified over 70 companies that their direct-sequence products may infringe its patents.
Last week, Agere (formerly Lucent Microelectronics) announced it was suing Proxim for violating its patents. The suit is aimed at protecting Agere's chip customers, which the company said are being threatened by Proxim's campaign (see May 31 story).
Meanwhile, wireless systems supplier Symbol Technologies in Holtsville, N.Y., has also filed a civil case against Proxim after being sued by the Sunnyvale company. Symbol has teamed up with chip supplier Intersil Corp. to fight Proxim (see May 14 story).
Based upon initial review of the two suits filed by Agere and Symbol, officials at Proxim said they believe the claims have no merit.