Rackspace, founder of the OpenStack cloud software project, believes it needs to challenge patent infringement lawsuits to protect the open-source community, Schoenbaum said in an interview. Open-source software is especially vulnerable to patent trolls because the code is out in the open, he said.
The company is also defending itself against infringement lawsuits involving OpenStack, he added.
The inter partes petition at the USPTO will cost Rackspace more than settling with Rotatable, but the company believes it's important to strike back, Schoenbaum said.
"At this point, we're tired of the game," Schoenbaum said. "I don't think this particular patent troll bargained for this outcome."
Grant Gross covers technology and telecom policy in the U.S. government for The IDG News Service. Follow Grant on Twitter at GrantGross. Grant's e-mail address is firstname.lastname@example.org.