EPO Decision Clarifies Presumption of Priority Claims for Patent Applicants

On October 10, 2023, the Enlarged Board of Appeal of the European Patent Office (EPO) set forth a consolidated decision in cases G1/22 and G2/22, which served to clarify a widely contested issue concerning the validity of a priority claim at the EPO. According to the ruling, an applicant claiming priority is endowed with the presumption of their right to claim that particular priority. This presumption, however, is not absolute, and circumstances may arise where it can be challenged and potentially rebutted.

The decision represents a welcome development for applicants as it provides a more defined landscape and mitigates certain uncertainties around priority claims at the EPO. Nonetheless, it is important to remember that the presumption is rebuttable, which underscores the continuing need for applicants to approach priority claims in an accurate and timely manner.

This important news was first reported by law firm Goodwin in a dedicated article on JD Supra.

Going forward, corporations and law firms operating in the realm of intellectual property will need to heed these developments to best navigate their clients’ patent litigation strategies. As always, vigilance and accurate documentation will serve as the key linchpins in such efforts.

The consolidated cases G1/22 and G2/22 highlight the EPO’s commitment to iron out complexities and potential disparities in the patent application process. This decision will inevitably shape the handling of priority claims at the EPO in the years to come, underlining the critical role of up-to-date legal knowledge for professionals in the field.