Facts
A company sought an to stop a rival selling surgical stitches, claiming patent infringement.
Issue
What test applies to interim ?
Held
Interim injunction granted.
Principle
The court asks: is there a serious question to be tried? Would damages be an adequate remedy? Where does the balance of convenience lie?
Why it matters
The leading test for interim (interlocutory) injunctions. Widely followed in common law countries.
Cited in these chapters
Cite this page
American Cyanamid Co v Ethicon Ltd [1975] AC 396 (Lanbuk) <https://www.lanbuk.com/llb/torts/cases/american-cyanamid-v-ethicon> accessed 31 October 2026
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This summary is a Lanbuk study aid based on the generally known facts and reports of the case. It is not legal advice.