What happens if data regarding the inventor or an applicant is missing?
If within the 31-month time limit the inventor has not been designated or certain information regarding the inventor or any applicant is missing, the EPO will invite the applicant to file the designation of the inventor or to submit the missing data within two months from the notification of a communication under Rule 163(1) or (4) EPC (see point 2.8.002).
Source: http://www.epo.org/applying/international/guide-for-applicants/html/e/ga_c5_12_1.html
Date retrieved: 17 May 2021