Patent attorneys usally dont do extensive searches from my experiences with them. It takes hours to really dig into patents. Plus they dont search the web deep enough for simular products.There expertise is in writing the description and claims.
I remember one time yrs ago I was in my patent attorneys (Tom) office going over one of my ideas with him. He left the room to make some copys and I notice a prototype on his desk that interested me. When he came back in the room I had the prototype in my hand and asked him about it. He told me the prototype was invented and made by a greenhorn inventor. The thing was pretty cool and unique. I thought it had tons of potential and so did Tom.
After I got home that prototype was still on my mind,so I fired up my computer and started a patent search on my own. Within 20 mins I located a patent "application" that was published 3months before the inventor went to see Tom. It was the exact idea to a T.
Theres skill and luck involved in product or patent searching. Practice,practice and more practice is the name of the game. Ive talked to Roger many times about this issue, both of us get inventors that contact us on a regular basis that swear there ideas new and unique. We do a quick search and find it within mins most of the time. I think most greenhorn inventors see $$$$ signs way to early in the game and dont put in enough product research, next thing there o the phone with some patent attorney want to file a patent app......Big mistake,,,, Ive been there done that yrs ago. Never again !!!!
http://www.totalpatentsearch.com/