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If you need to do a little patent searching, the best choice just keeps getting better: IP.com‘s free patent search engine. Not only is the design better and the page loading time faster than most other free patent search sites, but IP.com has more databases in place and more on the way (including China PRC and Chinese in English translation already in place), from patents and patent applications to prior art publications and now IBM Redbooks. And IP.com’s handy “more like this” feature on every patent page is a great semantic matching tool that no other search service has.

Here are a number of patents and patent applications that are all about the process of searching for patents:

• Technical classification method for searching patents
• Web-based method and system for identifying and searching patents
• Method for searching patents utilizing IPC classification
• System and method for searching patents based on a hierarchical histogram
• Patent searching method and patent searching system using the same
• Method for inspecting patent search result
• Repetitive fusion search method for search system
• Data searching apparatus capable of searching with improved accuracy
• Method, apparatus, and system for searching based on filter search specification
• Patent searching program automatic installing refreshing system and method
• Reliability verification method of patent retrieval data
• Enhanced search results
• Dynamic image content search information managing apparatus
• System and method to enable searching across multiple databases and files using a single search
• Pay-per-patent-proof system and method
• Full text search system
• Multilingual patent information search system
• System and method of placing a search listing in at least one search result list
• Search system and method based on search condition combinations
• Using hyperbolic trees to visualize data generated by patent-centric and group-oriented data processing
• Patent searching method and patent searching system using the same
• Method for inspecting patent search result
• Expanded patent search
• System and method for searching patents using DNA fragment number
• Patent searching system and method
• System and server for providing information, user terminal device, contents display device and method
• Display method for patent search
• Patent retrieval method and system
• Patentability search / novelty search

I have tried a bunch of services for patent, non-patent and trademark searching, and IP.com definitely has the best free patent search service I’ve come across. Give it a try.