... Senator Patrick Leahy, a Vermont Democrat who is chairman of the Senate Judiciary Committee and who was a primary sponsor of the 2011 law, said he backs the president’s effort to suppress patent trolls. “The United States patent system is vital for our economic growth, job creation, and technological advance,” Mr. Leahy said in a statement. “Unfortunately, misuse of low-quality patents through patent trolling has tarnished the system’s image.” ...