Consult an attorney and file the appropriate paperwork to dispute the injunction in your state. Dispute a preliminary or temporary injunction in the trial court. Appeal a permanent injunction at the trial court only in states that permit a "motion for reconsideration," or otherwise, file your appeal with the relevant court of appeals in your state or federal appellate district.
Argue that the circumstances that that originally justified the injunction have changed, and that the court should modify or dismiss the injunction accordingly.
Explain that the law that authorized the injunction has changed, rendering it improper.
Show the judge that the injunction is unjust by comparing your situation with the situation of the party benefiting from the injunction.
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