Known in some national European jurisdictions, unknown in others, the UPC implements a defensive measure against provisional measures that might be requested by a patentee: the protective letter. Provisional measures that may be requested by a patentee against an alleged infringer include: prohibition of the continuation of the alleged infringement (A62(1)UPCA) and seizure or delivery of the products suspected of infringing a patent so as to prevent their entry into, or movement, within the channels of commerce (A62(3)UPCA).

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