You are correct. The injunction is temporarily suspended. But why do I get the feeling that once nullity procedure is started, the suspension might continue until that process is over? From another article.
<HTC denies any wrong doing, and intends to appeal the decision of the court. HTC told the Handelsblatt newspaper they are taking the matter "very seriously" and are applying to have the patents, which IP-Com bought in 2006 from Robert Bosch GmbH, declared invalid, and are applying to the Federal Patent Court Munich for this purpose.>
Worth following to see how this plays out. Opty