The German Patent and Trademark Office offers comprehensive support in all areas of protective rights that can be registered. You can download among others leaflets (e.g. „How to register a trademark?”) and official forms. The collection of links includes the remaining patent offices all over the world.
A multilevel information platform concerning all issues relating to the European Union, including its legal acts, directives, etc. can be retrieved at the EU official server.
The German Plant Variety Rights Office (Bundessortenamt) provides comprehensive information on plant varieties protection rights and rights relating to agricultural crops.