Prism Technologies sued Johnson & Johnson, the world's biggest producer of medical devices, VeriSign Inc. and two other companies, claiming they had infringed a patent covering Internet security technology.
Prism contends in a suit filed Monday in federal court in Wilmington, Del., that Johnson & Johnson and VeriSign, along with Computer Associates International Inc., the fifth-largest software maker, and RSA Security Inc., misappropriated the technology, which is protected by a patent awarded in 2003 for a system to control access to subscription-based Internet sites.
All four companies are "using computer programming products, information retrieval products" and other software in violation of the patent, Omaha-based Prism said in its complaint, which asks for unspecified damages of "not less than a reasonable royalty."
VeriSign, based in Mountain View, Calif., and RSA, based in Bedford, Mass., faced similar allegations in another case tried in the same court in 2003. A jury decided that the companies didn't infringe Internet security patents owned by an inventor who sought $20 million in damages.