Foreign intellectual property patent cases

It depends on the terms of the contract between the two parties. If the contract stipulates which patent can be used free of charge, then no additional fees may be paid within the scope of the contract, or this part of the fees may be included in the contract itself. If not, you need to negotiate the usage fee separately. This part of American law is strict. Cases of using other people's patented technology in China account for a small proportion of actual cases, and the requirements in Europe and America are more stringent.