Why wouldn't they? They make their moneyy from Patent Fees. If they stopped granting Patents their revenue stream dries up. They have no incentive not to approve patents.
I'm wondering why companies don't sue the Patent office when the patent used against them is invalidated (often some companies are still paying fees because they settled. )
I'm wondering why companies don't sue the Patent office when the patent used against them is invalidated (often some companies are still paying fees because they settled. )