3.2.1 Physical requirements of applications filed by reference to a previously filed application 

If the application is filed by reference to a previously filed application under Rule 40(1)(c) (see A‑II, 4.1.3.1), and if no translation is required, the certified copy of the previously filed application required under Rule 40(3) must satisfy the physical requirements. If the previously filed application is not in an official EPO language, only the translation under Rule 40(3) must satisfy the physical requirements (Rule 49(2)), provided that the authenticity of the contents of the original is not impugned.