Limitation of a patent and the Unified Patent Court’s ‘long arm’

We analyse the problems that arise when a claim is filed with the UPC for infringement of a unitary patent and, at the same time, for infringement of the validation of the basic European patent in States that are not party to the Agreement on a Unified Patent Court, and the claimant solely limits the unitary patent (because the defendant only files a counterclaim for revocation of the unitary patent with said court, but does not initiate any parallel revocation proceedings with the competent national court against the validations of the basic European patent in States that are not party to said agreement).

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