2. Personally, I feel that the main contract and the supplementary agreement have the same legal effect and complement each other. If only one of them is taken, the other party will take out two signed by both parties. Undoubtedly, one is unconvincing. All disputes are valid. If one of them is invalid, why did you sign it in the first place ...
High-tech enterprises should only need a copy, or as long as a patent proves that the company has patent technology support when applying for high-tech enterprises. After obtaining the certificate, the patent is useless unless it is production ... and then involves patent projects. Similarly, if you are allowed to apply for a high-tech enterprise, and you grant a patent to the product and mass-produce, it will violate the supplementary agreement signed at the beginning.