The suits were filed after the companies failed to stop the alleged activity after Microsoft contacted them, the company said.
The lawsuits were filed against Abacus Computer Corp., Anaheim, Calif.; Avantek Inc., Orlando, Fla.; First E-Commerce, Austin, Texas, which does businss as Discount Electronics and/or DiscountElectronics.com; M&S Computer Products Inc., Boonton, N.J.; Micro Excell Inc., Gadsden, Ala.; Odyssey Computers, Pasadena, Md.; Signature PC, aka Signature Computers, Warwick, R.I.; and Technology One, Los Angeles.
The lawsuits stem from an 8-year-old program in which Microsoft tests software, software components or computer systems for authenticity. If it is not legitimate, the dealer is generally sent a cease-and-desist letter. The latest lawsuits follow a similar action in November 2004 against eight other dealers.