[A_D_E_P_T]

I've just tried it and it looks good. Will probably sign up.

If you can get this to work for patent searches across multiple languages, you'd really have a killer product. Patent searches, via an attorney, cost thousands of dollars each and are nevertheless frequently imperfect. (I had a patent denied because somewhere, in a throwaway paragraph buried in the 100-page description of an entirely different invention, something similar was briefly mentioned and never referred to again.)

I'd gladly pay $100/month for "Deep Patent Search," and more than that if it's really good.