Legal Research Service for the Boards of Appeal, European Patent Office, Case Law of the Boards of Appeal of the EPO (9th edition, July 2019), v.a.3.1 "Binding effect of requests - no reformatio in peius".
"According to the established case law of the boards of appeal, the doctrine of reformatio in peius does not apply separately to each point or issue decided, or to the reasoning leading to the impugned decision (see T 149/02 of 25 July 2003, point 3.2.1)." in EPO Board of Appeal decision T 0384/08 of 26 June 2009, Reasons 2.
