[Direct answer]In the Beijing area, a patent division application should be submitted before the original patent application is granted a patent right; if the original application is rejected, withdrawn, or deemed withdrawn, the deadline for submitting the division application is the same as that for the original application. According to the provisions of the Patent Law of the People's Republic of China on unity, if an application contains more than two inventions, the applicant may actively or upon the examiner's indication of lack of unity, submit a division application; the division application may retain the original filing date, but shall not exceed the scope described in the original application. It is recommended that enterprises evaluate the division application promptly after receiving the review opinion on unity to avoid missing the opportunity. For more details, please refer toIntellectual property protection and corporate legal services.

1. Problem background and typical scenarios

Patent divisional applications are often seen in scenarios where enterprises produce multiple related technical solutions during R&D, but submit them all in a single application. Typical situations include: the reviewer issues a lack of unity review opinion during substantive review, requiring the applicant to limit the scope of claims or file a divisional application; the applicant voluntarily splits independent but related inventions to expand the scope of protection and retain the original filing date; and the original application has drafting flaws, so the applicant uses the divisional application to reorganize the structure. Divisional applications can both extend the priority benefits of the first filing date and circumvent unity obstacles. In corporate legal affairs, the timing and scope of divisional applications directly affect the quality of the patent portfolio. Relevant contractual arrangements can be referred to for reference.Business and contract dispute services for enterprises.

II. Key points of dispute

There are three key points of the dispute. Firstly, the timing of filing a divisional application: a divisional application must be filed before the original application is authorized, and it is generally not allowed to file a divisional application after authorization. Mastering the time limit is the core issue. Secondly, the judgment of unity: which technical solutions must be filed as divisional applications, and which can be filed as consolidated applications, depends on the specific technical feature correlations between the technical solutions. Thirdly, the scope restriction: a divisional application must not exceed the scope described in the original application, and applications exceeding the scope will be rejected. For cases involving the confirmation of ownership of technical achievements, they can be followed up accordingly.Creditor-debtor relations and enforcement case servicesHandle ownership disputes.

III. Professional analysis by Hengluo Lawyers

Based on practical observations of enterprise intellectual property management, divisional applications are often underestimated in terms of their strategic value. According to the provisions of the Patent Law (effective June 1, 2021) on unity of invention and the requirements of the Implementing Regulations of the Patent Law that divisional applications should be filed before a patent is granted, and that the original filing date can be retained in the divisional application but the scope of protection cannot be exceeded, reasonable division can maintain priority benefits while optimizing protection layout. In practice, enterprises often lose the opportunity for division due to failing to respond to the review opinions on unity of invention in a timely manner; or the divisional application is rejected because the drafting deviates from the scope of the original application. Hengluo Lawyers usually recommend: assessing the necessity of division immediately after the review opinions are issued, and drafting a divisional application list jointly by patent agents and legal departments. For major patent layouts, it is advisable to seek assistance from professional agencies.Special services and other case servicesCoordinate and plan everything in an organized and efficient manner to ensure that all tasks are completed on schedule and within budget.

IV. Practical suggestions and legal basis

The legal basis is Article 31 of the Patent Law of the People's Republic of China (amended on October 17, 2020 and implemented on June 1, 2021) (the principle of unity, requiring that a single invention or utility model patent application be limited to one invention); and the provisions of the Implementing Regulations of the Patent Law regarding the submission of a divisional application before the original application is granted a patent right, the divisional application retaining the original filing date, and not exceeding the scope of the original application (the current effective version). Practical suggestions: Make a decision promptly after receiving the review opinion on unity; the divisional technical solutions must originate from the original application and may not add new substantive content; pay attention to the time limit of the authorization node of the original application; establish a divisional plan for patent portfolios. For cross-border layouts, it can be combined with other relevant regulations.Financial capital and cross-border legal services involving foreign affairsEvaluate the PCT pathway.

5. Henglu Law Firm's Reminder

The success or failure of a divisional application depends on two factors: timing and scope. In terms of timing, it is essential to file the application before the original patent is granted, as the divisional application channel will be completely closed after the grant. In terms of scope, the content of the divisional application must fall within the scope described in the original application. Any new technical features may be deemed as exceeding the scope and be rejected. Enterprises should incorporate divisional applications into their routine patent management, initiating an evaluation as soon as they receive the review opinion, and never delaying until the eve of authorization. For uncertain judgments on unity of invention, it is recommended to consult a patent agent or intellectual property lawyer as early as possible to proactively mitigate the risk of layout. For related disputes over ownership, please refer to the relevant guidelines.Real estate sales and construction project servicesThe path of intellectual property litigation beyond these channels.

VI. Frequently Asked Questions

Q1: Can the application for a separate case be successful, and is it necessary to file it?

The splitting of a patent application itself is not a lawsuit, so there is no concept of winning or losing. Its value lies in protecting the layout of the invention. If the original application is found to lack unity, and you indeed have another independent technical solution that deserves separate protection, it is usually necessary to file a divisional application to retain the original filing date and continue to enjoy priority rights. However, if the content of the divisional application cannot be supported within the scope of the original application, or its commercial value is limited, there is no need to force it. When deciding whether to split the application, you should comprehensively evaluate the technical relevance, market value, and review opinions, rather than blindly splitting it. It is recommended to seek the opinion of a patent attorney on the feasibility of splitting the application before making a decision.

Q2: What materials and documents are required to file an application for case separation?

The core materials include: the application documents and the review opinion notice of the original application, the claim and description of the proposed divisional application (which must originate from the scope described in the original application), the divisional application request, and the original application number and application date information. The divisional application should clearly state that it is based on the original application and retain the original application date. If the divisional application is initiated due to review opinions, it is also necessary to submit a response to the lack of unity and a divisional application explanation. The completeness of the materials is a prerequisite for the divisional application to be accepted. It is recommended to submit the materials before the original application is authorized to avoid deadline risks.

Q3: How much does it cost to entrust someone to handle the application for a separate case?

The fees for a divisional application mainly include official fees (in accordance with the fee standards of the China Intellectual Property Administration, similar to those for regular applications, including application fees, review fees, etc.) and the service fees of patent agencies. Agency fees are usually charged per case or based on the workload, with the specific charges subject to the agency agreement and not subject to unified government pricing. Compared with resubmitting a new application, a divisional application typically has more controllable overall costs because it retains the original filing date and already has a foundation of documents. It is recommended to clarify the composition of fees and agency fees before entrusting the agency to handle the application to avoid subsequent disputes.

Q4: How long does it usually take from the submission of a divisional application to its authorization?

After the divisional application is reviewed, the authorization period is similar to that of a regular patent application. The substantive review typically takes several months to several years, depending on the technical field and the review backlog. The divisional application itself does not reset the review process, but it needs to wait for review resources. The key is that the "timing window" for filing a divisional application is very short — it must be completed before the original application is authorized, otherwise the window will close. Therefore, the focus of time management is not on the speed of the review, but on timely submission. It is recommended to prepare immediately after receiving the unity opinion and to set aside time for corrections.

Q5: If a company receives a review opinion on single-item compliance, what should be the first step to take?

It is recommended to follow four steps: First, patent agents and legal affairs departments should jointly review the review opinions to identify which technical solutions can be retained and which ones need to be divided into separate cases; Second, evaluate the market and defensive value of each solution to decide whether to divide it into separate cases and how many cases to divide into; Third, ensure that the technical solutions in the request for division strictly originate from the scope described in the original application and avoid exceeding the scope; Fourth, grasp the time limit before the original application is granted and submit the request for division and related documents in a timely manner. Throughout the process, establish a response register for review opinions and, if necessary, coordinate and combine strategies with a professional team.

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 court may affect the conclusions. Welcome to consult Henglu Law Firm for specific cases.

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

Disclaimer: This article is compiled based on the current effective laws and regulations and open 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. If you encounter disputes, please consult a practicing lawyer in time.