The EPO will accelerate opposition proceedings when an infringement or revocation action has been instituted before the UPC. See the EPO News of 22.02.2024 and EPO OJ 2023, A99. The EPO deems that “concluding the EPO parallel opposition proceedings swiftly fosters legal certainty and procedural efficiency, as well as high quality and uniformity in the European patent system.”
I am interested to learn whether divergence between the EPO and the UPC in parallel opposition/revocation proceedings can indeed be avoided going forward.