Assuming this question is in relation to obtaining (prosecuting) a patent, there is no set answer. Here are my suggestions based on my own experience first as an inventor, and more recently as a patent attorney: 1. Chose the attorney who will be doing the work for you, rather than a law firm. 2. If the invention is in a technical field, I would choose an attorney who has previous personal experience as a technical worker, manager, or individual contributor in that general area. For example, look at educational background and employment experience on the attorney's resume. Publications. Project experience. Advanced degree in math/science/engineering etc. 3. Next, consider the attorney's legal and patent experience. I would favor an attorney who has at least 3-4 years experience in patent prosecution. 4. You could ask the prospective attorney for references, then contact one or two of those references. Contact a reference for whom the attorney has drafted/prosecuted patents.
Answered on Apr 13th, 2015 at 1:15 PM