Good question. I was trying to compile a list before I took the exam but I can't find it now, sorry.
If you go through some of the mocks
you should get some ideas though.
Some of the more common ones to look out for are: Proxy, Decorator, Abstract Factory, Factory Method etc. as applied to EJBs.
The Abstract Factory vs. Factory Method has been debated before on JavaRanch:
https://coderanch.com/t/154652/java-Architect-SCEA/certification/Patterns-Abstract-Factory-Vs-Factory I happened to be asked a question on this topic in the exam. It only had one of the choices though
Some would consider certain types of EJB management as an implementation of the Flyweight pattern...but that is another contentious topic of debate.
Good luck!