Case C-425/16: Judgment of the Court (Ninth Chamber) of 19 October 2017 (request for a preliminary ruling from the Oberster Gerichtshof — Austria) — Hansruedi Raimund v Michaela Aigner (Reference for a preliminary ruling — Intellectual and industrial property — EU trade mark — Regulation (EC) No 207/2009 — Article 96(a) — Infringement proceedings — Article 99(1) — Presumption of validity — Article 100 — Counterclaim for a declaration of invalidity — Relationship between an action for infringement and a counterclaim for a declaration of invalidity — Procedural autonomy)