How to purchase personal patented products and how to file patent rights, and what documents do you need to obtain?

Individuals who need to sell patented products provide documents related to patented products (including patent certificates, valid transfer contracts, detailed instructions on the manufacture and use of patented products, etc. ), as well as invoices for purchasing patented products (individuals can go to the local tax office to issue invoices), and record them in the account to obtain the full cost of the patent right, by: intangible assets loan: bank deposit.