The time limits for filing a request for re-establishment are set out in R. 136(1) EPC (see also Art. 122(2) EPC 1973). In principle, a request must be filed within two months of removal of the cause of non-compliance and, at the latest, within one year after expiry of the unobserved time limit; R. 136(1), second sentence, EPC provides for two exceptions: a request for re-establishment in respect of the periods specified in Art. 87(1) EPC (priority) and Art. 112a(4) EPC (petition for review by the Enlarged Board of Appeal) must be filed within two months of expiry of the unobserved time limit. Hence the case law summarised in this chapter III.E.4.1.1 is not applicable to such cases, but the principles laid down in this chapter III.E.4.1.2 are likely to be transferable to the two-month period under R. 136(1), second sentence, EPC. Under R. 136(1), third sentence, EPC, the request for re-establishment of rights is not deemed to have been filed until the prescribed fee has been paid.