38It follows from settled case-law that the concept of proceedings ‘concerned with the registration or validity of patents’, referred to in those provisions, is an autonomous concept intended to have uniform application in all Member States (judgments of 15 November 1983, Duijnstee, 288/82, EU:C:1983:326, paragraph 19; of 13 July 2006, GAT, C‑4/03, EU:C:2006:457, paragraph 14, and of 5 October 2017, Hanssen Beleggingen, C‑341/16, EU:C:2017:738, paragraph 31).
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