For example, a China company applying for a patent in the United States must go through the local patent office in the United States. Other countries are similar.
Exceptionally, if you apply to the United States through PCT (Patent Cooperation Treaty), you can apply directly in China, and companies can submit applications directly through China National Intellectual Property Administration, China. Inexperienced, it is recommended to find an agent.
2. A: Don't ask.
In 2009, the new patent law abolished the restrictions on foreign-related agency rights. The meaning of this foreign-related agency: Foreign companies or individuals applying for patents in China must go through the Patent Office designated by China National Intellectual Property Administration with the qualification of foreign-related agency. In other words, China enterprises have never been restricted in finding patent agencies to apply abroad.
Supplement: If you look for a domestic firm to apply for a patent in the United States, the domestic patent firm should also look for an American patent firm that cooperates with them to translate it, and then submit the documents to the US Patent Office.
For companies with rich experience in patent application, it is suggested to cooperate directly with the US Patent Office. It is more convenient for people with high English level like you to communicate directly with the US Patent Office, hehe, saving money and time.
For companies with less experience, it is recommended to find a domestic patent office. Patent application is still a very professional matter to avoid accidents.