https://www.epo.org/en/service-support/faq/applying-patent/patent-prosecution-highway-pph/overview-pph-procedure/when-my

When is my patent application eligible for PPH / What are the participation requirements?

Your application is eligible for PPH if:

  1. the European application (EP) for which participation in the PPH programme is requested shares the same earliest date with the corresponding, OEE application;
  2. the corresponding, OEE application has been found to contain at least one patentable/allowable claim;
  3. all claims of the EP application filed with the EPO as OLE sufficiently correspond with the claims deemed patentable/allowable in the OEE application, and
  4. substantive examination of the EP has not begun.