What is the business scope of a patent agency?

Patent agencies undertake the following affairs: (1) Providing patent affairs consultation; (2) Writing patent application documents and handling patent applications; Matters related to substantive examination or review request; (3) Matters related to raising objections and requesting the invalidation of the patent right; (4) Handling matters related to the right to apply for a patent, the transfer of the patent right and the licensing of patent exploitation; (5) Accepting the employment and appointing a patent agent as a patent consultant; (6) Handling other related affairs.