(1) Without permission, Party C uses Party B's method B to manufacture product A, which infringes the patent rights of Party A and Party B; (The right involved is manufacturing)
(2) D bought a product from C and sold it. At this time, D also infringes on A's patent right (the right involved is sales), but if it can prove its legal source and prove that it is not intentional infringement, it will only bear the tort liability and not be liable for compensation;
(3) E bought product A from D, and then used it as a chemical raw material to produce crude product C. At this time, E also violated the patent right of A (the right involved is the right to use).
(4) Product C has been purchased and sold from E, and there is no infringement of exhaustion doctrine at this time;
(5) Geng imported the A product produced by method B from abroad and sold it abroad; Xin imports Class A products from abroad and products produced by other methods are sold abroad; First of all, it depends on whether the patents owned by A and B have been applied abroad. No, this involves parallel imports. Personally, I think it is not infringing.
(6) Geng and Xin advertise on TV for selling imported products. If this advertisement is in an area where both parties have patent rights, it is infringement, and the right involved is promise to sell.