If you already have a buyer for your patent - the legal fees will be small - based on the hourly rate for the lawyer. Negotiations of the price to be paid can take some time - and again, the hourly rate would apply. You and your lawyer can agree to a maximum fee if desired. If you do not have a buyer - then shopping the patent can be much more expensive. There are commercial brokers that you can use - check our GOOGLE for such parties. Ocean Tomo is one that I am aware of.
Answered on May 14th, 2015 at 3:35 PM