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What are the procedures and materials needed to apply for a US patent?
Documents required to apply for a US patent

(1) Application Form

(2) Declare that the inventor must be sworn as the real inventor in the affidavit, declare that he has read and understood the contents of the specification, and will disclose any technical data related to the patentability of the application to the Patent Office.

(3) Instructions, including the contents, scope and abstract of the instructions.

(4) graphics, no need

The main process of patent application in the United States

1. Submit an application: When submitting an application, you need to pay the application fee, search fee, review fee and application documents at the same time, otherwise, a late fee will be incurred; After the application is submitted, USPTO will issue a formal receipt, and you can immediately see the main information of the case such as the application number; In addition, the United States has special requirements for claims settlement. If there are multiple citations, additional official expenses will be incurred: 780 dollars for large entities, 390 dollars for small entities and 195 dollars for micro entities. If it is cited many times, it will not be accepted by USPTO. Therefore, when entering the American stage, we will make preliminary amendments to the claims according to the requirements of the American patent law to avoid additional costs. If the existing technology is mentioned in the specification, PCT retrieval report or review comments, an id needs to be made and submitted to USPTO. If IDS is not submitted, the authorized patent may be invalid if it is deemed as "intentional deception" when the patent validity is involved in the future;

2. Formal review: After the formal review is passed, USPTO will issue a formal official acceptance notice;

3. Publicity: after passing the examination, it will be published automatically within 18 months from the application date or priority date or within 18 months from the application date according to the applicant's requirements;

4. Actual audit: Generally, audit opinions will be issued within 12 to1August. If rejected, the applicant must give a reply within 3 months from the date of receiving the notice. The applicant can request an extension of the time limit, which can be extended for up to 3 months; Generally, American applications will receive a review opinion from 1-2. If the review opinion can't be overcome and is finally rejected, you can choose to continue the defense (the probability of passing is low) or submit the defense and RCE (somewhat similar to the mid-evaluation, but the RCE is unlimited, and the USPTO will re-examine it after paying the formal fee, and the process is the same as the new case), or request an appeal.

5. In the process of examination, if some claims can be authorized, you can also strive for authorization first. Unauthorized rights can submit a continuation application (CA) to continue arguing with the examiner. If the applicant needs to add new substantive content during the application process, he can submit a partial continuation (CIP), and the newly added content does not enjoy the priority of the parent case. CA and CIP need to be submitted before the parent case pays the authorization fee, and the official fee is the same as the new case. After authorization, there is a separate patent certificate (which can be regarded as an independent patent in China and received corresponding government subsidies).

6. Patent registration procedures: If no reason for rejection is found after examination, a notice of authorization shall be issued, and the applicant shall go through the patent registration procedures and pay the registration fee within three months from the date of receiving the notice.