Carlill v Carbolic Smoke Ball Co

Carlill v Carbolic Smoke Ball Company [1893] 1 QB 256 is an English contract law decision by the Court of Appeal, which held an advertisement containing certain terms to get a reward constituted a binding unilateral offer that could be accepted by anyone who performed its terms. It is notable for its treatment of contract and of puffery in advertising, for its curious subject matter associated with medical quackery, and how the influential judges (particularly Lindley and Bowen) developed the law in inventive ways.

Source: Wikipedia — Carlill v Carbolic Smoke Ball Co (CC BY-SA 4.0)