Producing millions of documents for discovery is one of the main reasons that the cost of fighting a patent case is often so high.
In a statement, Cornyn said that abusive patent litigation "directs resources away from the research, development, wages and growth this country so desperately needs."
"These reforms will deter patent litigation abusers without prejudicing the rights of responsible intellectual property holders," he said.
The legislation is similar to the Shield Act, a bill co-sponsored by Reps. Peter DeFazio (D-Ore.) and Jason Chaffetz (R-Utah), that would require certain plaintiffs to pay for the defendant's attorney fees and other legal costs if their patent lawsuit fails in court.
Sen. Chuck Schumer (D-N.Y.) has introduced the Patent Quality Improvement Act, which would require that the U.S. Patent and Trademark Office sign off on all patent lawsuits before they can move to the courts.
Ken Wasch, president of the Software and Information Industry Association, applauded Cornyn for introducing "strong thoughtful legislation."
"It is a crucial step toward an effective legislative response to the plague of patent trolls damaging American innovation and our economy," he said.