concéder réciproquement des licences

CONT: Cross licenses are most often made between owners of ""interfering"" or ""blocking"" patents. Such interfering or blocking patents cover different aspects of the same invention. For example, if a basic patent is owned by one party and an improvement patent on the same invention is owned by another party, a cross license is warranted because the parties must have the benefit of both patents in order to practice the improvement to its best commercial advantage. Also, inventor A may obtain a patent on item X. Inventor B may obtain a patent on item Y. Both A and B may realize that items X and Y in combination with a third item, Z, which may be in the public domain, constitute a new and useful combination, XYZ. Therefore, A and B may cross-license each other to make, use, and sell each other's patented invention so that they both can produce XYZ without incurring any liability for infringement of each other's patent.