Dozens of academics have signed letters to Congress outlining contrasting concerns about pending patent reform legislation.

On Tuesday, 40 economists and law professors who research patents wrote to the Senate Judiciary Committee warning that proposals that make patent litigation much more costly could hamper innovation.

“If Congress is going to pass legislation that massively restructures the patent system, they shouldn't do it on the basis of flawed and unreliable studies,” said Adam Mossoff, a George Mason University School of Law professor who signed that note.