A patent license protects you from suits by the licensor. It may protect you from suits by others IFF the licensor warrants that his patent is valid. Edit note that this presumes the patent is granted.
DO NOT FORGET YOU SAW IT (sorry for the all caps pg, but this is important). If you are successful, you are liable for all profits, and revenues that would have been due under the standard licensing agreement (or a reasonable % if none is established). If you aren't successful, you are still liable for a portion of revenues.
However, don't worry about the patent until you are ready to bring a patent to market b/c you don't violate the patent by prototyping or researching; you only violate a patent by putting an infringing product on the market.
IAALBYANPM, so hire one if you really want to proceed.
DO NOT FORGET YOU SAW IT (sorry for the all caps pg, but this is important). If you are successful, you are liable for all profits, and revenues that would have been due under the standard licensing agreement (or a reasonable % if none is established). If you aren't successful, you are still liable for a portion of revenues.
However, don't worry about the patent until you are ready to bring a patent to market b/c you don't violate the patent by prototyping or researching; you only violate a patent by putting an infringing product on the market.
IAALBYANPM, so hire one if you really want to proceed.