Short answer. Move to dissolve it under Rule 58. An injunction may be dissolved on grounds shown by your affidavits, which the applicant may oppose by affidavits; or after hearing, where its continuance would cause you irreparable damage while the applicant can be fully compensated, provided you file a bond. An overbroad injunction may also be modified.
What the law says
may be dissolved, on other grounds upon affidavits of the party or person enjoined, which may be opposed by the applicant also by affidavits
Rule 58, Section 6 — Grounds for objection to, or for motion of dissolution of, injunction or restraining order. Read the full provision →
What the law says
If it appears that the extent of the preliminary injunction or restraining order granted is too great, it may be modified.
Rule 58, Section 6 — Grounds for objection to, or for motion of dissolution of, injunction or restraining order. Read the full provision →
Dissolution is fought on affidavits
The first route attacks the injunction on its merits. An injunction may be dissolved, on other grounds upon affidavits of the party or person enjoined, which may be opposed by the applicant also by affidavits. The battle is documentary: you swear to the facts showing why the injunction should not stand — that the applicant's right is not what it was made to appear, that the feared injury is not real, that circumstances have changed — and the applicant answers with counter-affidavits. The same showing of insufficiency that would have justified denying the application in the first place can justify undoing it.
The balance-of-injury route
The second route concedes, for argument's sake, that the applicant is entitled to the injunction — and asks the court to weigh the harm. After a hearing, the injunction may be dissolved if its continuance would cause irreparable damage to the party or person enjoined while the applicant can be fully compensated for such damages as he may suffer. The comparison is asymmetry: if keeping the injunction ruins you in ways money cannot repair, while lifting it costs the applicant only what money can restore, dissolution is available even against a valid application.
The counter-bond is the price
The balance-of-injury route is not free. To dissolve on that ground you must file a bond in an amount fixed by the court conditioned that he will pay all damages which the applicant may suffer by the denial or the dissolution of the injunction or restraining order. The bond is the court's insurance: the applicant loses the injunction's protection, and in exchange gains a fund answering for whatever that loss costs. Expect the court to fix the amount with the applicant's exposure in mind, and treat the bond as part of the strategy, not an afterthought.
Sometimes trimming beats killing
There is a third, quieter option: if it appears that the extent of the preliminary injunction or restraining order granted is too great, it may be modified. Injunctions are often drafted broadly — restraining an entire business operation when the dispute concerns one contract, or covering property the applicant never claimed. Where outright dissolution is a hard sell, showing the court that the order sweeps wider than the right it protects can win back most of what matters. Map exactly what the order stops you from doing against what the applicant actually sued about; the gap between the two is your motion.