Knowing that quite a few translators work on patents, I thought this glossary from the United States Patent and Trademark Office might be of use.
Personally, I’m not too keen on the visual presentation of the glossary, but it certainly seems useful.
There are also a number of videos providing introductions to various procedures and terms (such as “specimen”, “applicant”, “drawing” and “basis”) used by the Office. You can access a list here. Beware – not all computers will play the videos and some of the links appear to be broken.