[Squillo]

What you may want, first, is a patent searcher - not a patent lawyer. Do you need to find the "couple hundred" patents that you want to avoid infringing, or locate any that you might have missed? Or do you already have them and are trying to craft your claims around them? The first part is done by a patent searcher (there are several big firms and many 'solos' and small firms that do this, the fees vary), the second by a patent agent or attorney.

(I am technically a patent attorney, once you pass the patent bar the credential never expires, but I haven't practiced that kind of law in over 20 years so sorry, I really can't help. I could refer you to someone, but I don't know anyone who will do this kind of work for free (pro bono) or 'low bono'.)