The current patent statute (35 USC §283) allows courts to grant injunctions to prevent violation of patent rights, but provides little guidance, specifying only that injunctions be "in accordance with the principles of equity." The terms of the injunctions need only be "as the court deems reasonable."
The proposed statute would keep the current language intact, but would add another section spelling out the grounds for granting such injunctions. Under the new language, "a court shall not grant an injunction unless it finds that the patentee is likely to suffer irreparable harm that cannot be remedied by the payment of money damages." In making this finding, the court is not to presume the existence of irreparable harm, but is instead required to "consider and weigh evidence" relating to equitable factors. One of these factors is "the extent to which the patentee makes use of the invention."
One result of the proposed new language is that, in a preliminary injunction determination, a reasonable likelihood of success on the merits would no longer lead to a presumption of irreparable harm. The concept of "irreparable harm" has been extensively adjudicated; that body of case law would seem to remain largely relevant in making the determination called for by the proposed statute.