74Thus, on the one hand, the principle of examination of the facts by the CPVO of its own motion also applies in proceedings before the Board of Appeal (judgment of 21 May 2015, Schräder v CPVO, C‑546/12 P, EU:C:2015:332, paragraph 46). On the other hand, the Board of Appeal is also bound by the principle of sound administration, pursuant to which it is required to examine carefully and impartially all the relevant factual and legal information in the case before it.