"In a statement, Leahy said he hoped the Committee “will return to this issue,” but made clear the process is finished for now.

The statement read, in part:

“We have been working for almost a year with countless stakeholders on legislation to address the problem of patent trolls who are misusing the patent system …Because there is not sufficient support behind any comprehensive deal, I am taking the patent bill off the Senate Judiciary Committee agenda.”
(https://gigaom.com/2014/05/21/patent-reform-dies-in-senate-as-leahy-pulls-plug-on-key-bill/)