(1) A Board of Appeal at the Federal Patent Court sitting in a composition of three legally qualified members shall decide on appeals within the meaning of section 66.
(2) Proceedings regarding appeals from decisions of the Trade Mark Sections and the Trade Mark Divisions, including delivery of the decisions, shall be public in so far as the registration has been published.
(3) Sections 172 to 175 of the Courts Constitution Act (Gerichtsverfassungsgesetz) shall apply accordingly, with the proviso that
1. the public may also be excluded from the proceedings at the request of one of the parties if there are concerns of a threat to the interests of the applicant meriting protection,
2. the public is excluded when the decisions are delivered until the publication of the registration.