2303, 98 ER 201[1] is an English court decision that held there is a perpetual common law copyright and that no works ever enter the public domain.

After the term of the exclusive rights granted under the Statute of Anne expired, Robert Taylor began publishing his own competing publication, which contained Thomson's poem.

Starting in the 1740s, London booksellers presented that argument in a series of court cases, after they had failed to convince Parliament to extend the statutory term of copyright.

The Court of the King's Bench, led by Lord Mansfield (with Aston and Willes JJ concurring in judgment, Sir Joseph Yates dissenting), sided with the publishers, finding that common law rights were not extinguished by the Statute of Anne.

Perpetual copyright was ultimately resolved against the London publishing monopolies in the landmark case of Donaldson v Beckett.