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Section 66(2)

PA 1977
Patents Act 1977 · United Kingdom

One of two or more joint proprietors of a patent may without the concurrence of the others bring proceedings in respect of an act alleged to infringe the patent, but shall not do so unless the others are made parties to the proceedings; but any of the others made a defendant or defender shall not be liable for any costs or expenses unless he enters an appearance and takes part in the proceedings.

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Source: legislation.gov.uk · retrieved 2026-09-04