19 June 2026

T 0779/24 - Double patenting in opposition

Key points

  • How to deal with double patenting (G 4/19) in opposition? In the same manner as clarity (G 3/14), according to this decision.
  • "2. ... opponent 8 maintained their objection of double patenting under Article 125 EPC raised during the opposition proceedings, because claim 1 of the main request would be identical in scope with claim 1 of the patent EP 3 744 326, filed as a divisional application of the present patent and granted on 6 December 2023. 
  • In the impugned decision, the opposition division considered that double patenting was not a ground of opposition and that the amendments to the present main request were not causative of the potential objection of double patenting. Consequently, in line with G 3/14, the issue of double patenting was not to be examined in the opposition proceedings.
  • 2.3 [ ] opponent 8 did not provide any arguments why the opposition division's reasoning regarding the non-admittance of the objection was not correct. The objection of double-patenting does therefore not form part of the appeal proceedings."
EPO 
The link to the decision is provided after the jump.


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