[Direct answer]In the Beijing area, the review of invention patent applications goes through five stages in sequence: acceptance, preliminary review, publication, substantive review, and authorization announcement. According to Article 34 of the Patent Law of the People's Republic of China, the patent administrative department of the State Council shall publish the application after eighteen months from the date of receipt (and may publish it earlier upon request); Article 35 requires that, if a substantive review is requested, the applicant shall submit the request within three years from the date of application. If the request is not submitted within the time limit, it shall be deemed as withdrawn. After the substantive review is passed, the patent will be authorized and announced. All stages are interconnected, and there are statutory time limits for key nodes. For more details, please refer to the following link:Intellectual property protection and corporate legal services.

I. Problem Background and Typical Scenarios

The review period for invention patents is long and involves multiple stages, which is common in the layout of core technologies of high-tech enterprises and the transformation of university research results. Typical problems include: applicants not understanding the difference between "publication" and "authorization", mistakenly believing that disclosure means obtaining authorization; missing the deadline for requesting substantive review within three years from the date of application, resulting in the application being deemed withdrawn; failing to respond promptly after receiving the notice of review opinion; and assuming that they can just wait for authorization after submission, ignoring the payment and correction deadlines at various stages. Many applicants lose their rights unnecessarily due to not understanding the process. For enterprises with patent portfolios, it is recommended to combineIntellectual property protection and corporate legal servicesOverall management.

II. Key points of contention

There are three disputes and risk points in the review process. Firstly, the boundary between publication and authorization: publication only makes the application public and does not generate exclusive rights. Only after the authorization announcement can the patent right be obtained. Secondly, the time limit for requesting substantive review: the starting point of the three-year period is the application date. If the request is not made within the time limit, it will be deemed as a withdrawal, which is a frequent mistake. Thirdly, the response to the review opinion: a review opinion will be issued during the substantive review, and the applicant must respond on time. Otherwise, the application will be deemed as withdrawn. For those involved in patent pledge financing, they can refer to the relevant provisions.Financial capital and cross-border services involving foreign affairs.

III. Professional analysis by Hengluo Law Firm

Based on practical observations of handling patent review and re-examination appeals, most losses occur at the "procedural junctures" rather than at the substantive level. According to Articles 34 and 35 of the Patent Law, there are strict deadlines for both publication and substantive review requests. Applicants often miss the three-year substantive review request period due to internal process oversights, or fail to respond within the four-month reply period after receiving the review opinion, resulting in the request being deemed withdrawn. Hengluo Lawyers usually recommend establishing a patent deadline ledger, promptly filing a substantive review request from the application date, and organizing professional responses to review opinions. When necessary, they initiate re-examination appeals or file divisional applications for remedies. For cases involving re-examination and invalidation, a seamless connection can be established.Special services and other case-related services.

IV. Practical suggestions and legal basis

The legal basis is Article 34 of the Patent Law of the People's Republic of China (amended on October 17, 2020 and implemented on June 1, 2021), which stipulates that the patent application shall be published 18 months after the filing date, and may be published earlier upon request; Article 35, which stipulates that the request for substantive examination shall be submitted within three years from the filing date, and the request beyond the time limit shall be deemed as withdrawal; and Article 39, which stipulates that after the substantive examination is completed without any objections, the decision on granting the patent shall be made and the announcement shall be registered. The supporting rules of the Implementing Regulations of the Patent Law regarding the specific provisions on preliminary review, publication, the time limit for requesting and responding to substantive examination, and the authorization procedure. Practical suggestions: establish a time limit ledger after submission; request substantive examination and pay the fee in a timely manner; pay attention to the publication and authorization milestones; and provide professional responses to the review opinions on schedule. For patent protection, it can be combined with other relevant legal provisions.Creditor-debtor relations and enforcement case services.

5. Hengluo Law Firm's Reminder

The review of invention patents is a "marathon", so don't mistake the publication for authorization. The key stages include the request for substantive review within three years from the filing date and the four-month response period to the review opinion. Any delay in either of these stages may result in the application being deemed withdrawn. It is recommended to assign dedicated personnel or systems to track deadlines and prepare materials for substantive review and responses in advance. Although authorization may not be granted after publication, you can request appropriate fees from the implementers and make good use of this opportunity. Never respond to review opinions hastily, as poor responses may narrow the scope of protection. If you need process management, you can seek assistance from relevant agencies or platforms.Business and contract dispute services for enterprisesCollaborative management.

VI. Frequently Asked Questions

Q1: Is the review pass rate for invention patents high, and which stage is the most likely to encounter difficulties?

The review pass rate depends on the technical triad and the quality of the application documents, rather than the process itself. The substantive review stage is the most likely to encounter difficulties: reviewers will issue review opinions on novelty, creativity, practicality, and sufficiency of disclosure. If the technical solution is too close to existing technologies or the claims are written improperly, it is very likely to be rejected. In addition, procedural errors (such as failing to request a substantive review within the deadline or failing to respond to review opinions within the deadline) will also directly lead to the application being deemed withdrawn. It is recommended to conduct thorough searches and prepare responses before the substantive review, thereby managing both substantive and procedural risks and increasing the probability of final authorization.

Q2: What materials do I need to prepare and pay attention to at each stage of the review?

During the acceptance stage, focus on the application number and the acceptance notice to confirm that all documents are complete. During the preliminary review stage, assist in correcting formal defects. During the publication stage, prepare materials to request the implementer to pay appropriate fees. During the substantive review stage, which is the most critical, prepare the substantive review request, the comparison materials of existing technologies, as well as responses to the review opinions and possible amendments to the text. During the authorization stage, pay the registration fee and annual fee. Throughout the process, keep official documents and payment receipts and establish a time limit ledger. The quality of the materials and responses directly affects the authorization result, so it is recommended to have professionals follow up on this matter.

Q3: What is the approximate cost of completing the entire review process?

The official fees include application fees, publication printing fees, substantive examination fees, authorization registration fees, and annual fees, which are paid in accordance with the standards stipulated in the Patent Law and its Implementing Regulations. Those who meet the requirements may request fee reductions. If hiring an agency as a representative, the fees will vary depending on the technical complexity and the number of review responses, and are subject to the terms of the agency contract, with no unified government pricing. The more review responses there are, the higher the agency costs will be. It is recommended to include the substantive examination and possible review fees in the budget, and make good use of the fee reduction policy to reduce upfront expenses. The specific amounts should be based on the official published standards and the agency contract.

Q4: How long does it usually take for an invention patent to be granted after the review?

It usually takes several years or even longer from acceptance to authorization. According to the process, the application will be published within eighteen months from the application date, and the substantive review should be requested within three years from the application date. The substantive review usually takes one to several years from the request to authorization, depending on the review load and the number of review comments. If there are many review comments and the responses need to be revised repeatedly, the cycle will be extended accordingly. It is also possible to request early publication and substantive review in accordance with the law to speed up the process. Overall, the authorization cycle for invention patents is generally longer than that for utility models and industrial designs. It is recommended to set aside sufficient time and incorporate the responses to review comments into the project schedule to avoid affecting the pace of product launch and financing.

Q5: What should I do first after receiving the notice of review comments?

It is recommended to proceed in four steps: First, verify the type of the notification and the response deadline (usually four months from the date of receipt), and complete the response or request for an extension of the deadline in accordance with the law before the deadline expires; Second, analyze the comparison documents cited by the reviewer article by article to determine the disputed points regarding novelty, inventiveness, and sufficiency of disclosure; Third, study whether it is necessary to make non-excessive amendments to the claims to overcome the deficiencies, and the amendments must be based on the original specification; Fourth, prepare a statement of opinion, respond based on the technical effects and differences with the comparison documents, and consult professional agents when necessary. Throughout the process, keep all documents and submission certificates, and never ignore them beyond the deadline.

The above content is based on the compilation of judicial practices in the Beijing area. The facts of individual cases and the jurisdiction of the courts may differ, which may affect the conclusions. Welcome to consult Henglu Law Firm for specific cases.

If you are currently facing similar problems, it is recommended that you consult a professional lawyer as soon as possible with the necessary evidence to avoid missing the statutory time limits.Intellectual property protection legal services·Beijing Henglu Law Firm

Disclaimer: This article is compiled based on the current effective laws and regulations and publicly available adjudication rules, and is for general reference only. It does not constitute a formal legal opinion on specific cases. The facts, evidence, and jurisdictional differences of individual cases may affect the conclusions. In the event of a dispute, please consult a practicing lawyer in a timely manner.