Excellent descriptions of Canadian and US patent documents. (Queens University Library).
If you are an inventor, you should be aware of relevant "prior art" in your areas. Term “prior art” is patent term meaning – Is there proof that the idea exists in the public domain somewhere?
If you are an entrepreneur, you should monitor your competitors' new products, and where they are patented.
If you are a researcher involved in applied research, you need to review new and pending patents in your discipline.
If you are an engineer, you should look for ideas to improve your workplace.
If you are student, patent can explain how something works. Patents offer great diagrams and detailed explanation.
Patents are always the first place to look. Over 80% of the information contained in recent patent literature is not published elsewhere.
Challenges of patent literature search:
Search and display U.S. patents 1790 to within the last few months. Powers Google Book Search, with the ability to scroll and zoom in on text and illustrations. Does not include published applications.
Search International patent search with full images in PDF format.