In addition, "these patents give her control over the internet cloud and any cloud application," according to the brief, which also asserts that Pi-Net and WebXchange are "practicing entities with the earliest products implementing web applications based on her patents."
"Arunachalam invests 100% of her time in research and development (R&D) and in the patenting of new internet-based products," it adds. She did not respond to requests for comment on Friday.
Court records and news reports show that WebXchange has sued other tech vendors in recent years for patent infringement, including Dell and Microsoft.
Records also show that Pi-Net has filed lawsuits against a series of financial institutions within the past year or so, including Merrill Lynch and Bank of America. It wasn't clear Friday whether these were among the SAP customers referred to in SAP's filing, which were not named.
Chris Kanaracus covers enterprise software and general technology breaking news for The IDG News Service. Chris' email address is Chris_Kanaracus@idg.com