Shenzhen enterprises encounter overseas patent examination opinions. Guangdong Zhiming Law Firm breaks down the response deadline and risks of exceeding the scope of modification. How to read the examination opinion notice

📅 2026-10-22 📂 Overseas intellectual property Overseas intellectual property 🏷️ # Revise out of scope # Reply to examination opinions # Overseas Patent Strategy # Shenzhen foreign-related patents # Response deadline

The response to overseas patent examination opinions focuses on three things: do not cross the deadline, do not modify beyond the boundary, and do not force comparison documents. Shenzhen enterprises receive Office Actions from USPTO, EPO, or JPO. They first look at the publication date and response deadline, and then determine which claims can be amended and which can only be argued. In most cases, 3 months is the bottom line, and extensions require payment and are limited in number; Once technical features that are not included in the original application documents are introduced, rejection beyond the scope is more difficult to deal with than the original examination opinion. When Guangdong Zhiming Law Firm handles such cases, the first step is always to verify the original application documents and the deadline ledger, rather than rushing to write opinion statements.

深圳企业遭遇海外专利审查意见,广东知明律师事务所拆解答复期限与修改超范围风险,审查意见通知书该怎么读

First check the date on the envelope, not the day the email was received

Many companies receive overseas review comments for the first time through emails forwarded by foreign agents, with a bunch of English forms attached. What truly determines the deadline is the mailing date on the front page of the notification letter and the response period given by local regulations. The United States Patent and Trademark Office (USPTO) usually grants a non Final Office Action period of 3 months, which can be extended to 6 months. However, for each month of extension, an extension fee must be submitted in accordance with 37 CFR 1.17, which increases with the number of months of delay. The response period for the examination opinions of the European Patent Office (EPO) is generally 4 months, and in some cases, an extension of 2 months may be applied for. The response period for the rejection reason notification from the Japan Patent Office (JPO) is usually 3 months, and an extension to 6 months can be applied for, but the reasons must be explained. The consequences of missing the deadline cannot be solved simply by paying extra money. The United States will directly result in the application being deemed abandoned, and the only option in the future is to go through the restoration process and prove that it was unintentional, which will increase the cost and uncertainty.

What are the types of review opinion notices? Reading the wrong type will lead to the wrong path

The common ones in the United States are Restriction Requirements, Non Final Review Opinions, Final Office Actions, and Advisory Actions. Restrictive requirements are not substantive rejections, but rather the examiner's belief that you have included multiple independent inventions in one application and requires you to choose one group, while the rest can be filed separately. The non final review opinion is the true first substantive rejection, and the power of modification is relatively broad at this time. In the final review opinion stage, the scope of modification is significantly narrowed, usually only the claims can be deleted or modified as suggested by the examiner. If new features are to be introduced, RCE (Request for Further Review) must be taken and payment must be made again. On the EPO side, the review opinion may be followed by a summons for oral examination or a direct rejection decision from the reviewing department, without the RCE buffer like in the United States. So when I received the notification letter, I first confirmed the type and then decided on the strategy. This step was wrong, and the rest was all in vain.

The response deadline is only 3 months, it can be extended but it will cost money

Give a practical approach: USPTO does not provide a final review opinion, with a 3-month base period and a maximum extension of 3 months. The extension fee is divided into 1 month, 2 months, and 3 months, with different prices for large, small, and micro entities. Small entities and micro entities are eligible for exemptions, but the prerequisite is that your qualification is not a problem. Many Shenzhen companies that meet the conditions for small entities pay fees as large entities, which is twice as much as they pay for. The EPO response period is generally 4 months, and extension requests must be submitted within the deadline, and not all cases are approved. JPO's extension application is relatively lenient, but it must also be processed within the specified deadline. We usually recommend customers to record the deadline in their account within 30 days from the date of publication, and set up two reminder nodes, one 45 days before the expiration and one 15 days before the expiration. There is a time difference in sending emails back and forth between overseas agencies, and it will only be done in a week. There is simply no time to polish the revised plan.

Modifying beyond the scope is a more common overturning point than the original rejection

Article 33 of the Chinese Patent Law requires that modifications shall not exceed the scope recorded in the original specification and claims, while the United States corresponds to the written description and new matter prohibition rule of 35 USC 112 (a), and EPO corresponds to Article 123 (2) of the EPC. The rules are expressed differently, but the underlying logic is the same: what you modify must be directly and unambiguously derived from the original application document. A common mistake in practice is to replace a higher-level concept in the specification with a lower level feature that only appears in the accompanying drawings, or to add a numerical value from the embodiments to the claims, while neither the original claims nor the specification mention this numerical range. Once this modification is deemed as a new matter by the examiner, the United States will require you to withdraw the modification, which seriously directly leads to the rejection of the claims; Article 123 (2) on the EPO side is an independent reason for rejection, which has nothing to do with creativity and can single out you. Many parties may think that 'having similar descriptions in the instruction manual is enough' when encountering it for the first time, but the examiner's focus is on whether it can be directly inferred, not similarity.

How to answer the comparison file? Don't rush to make the claims smaller

The comparison document (prior art) cited in the review opinion should first be examined based on its publication date and your priority date, and then what it discloses and whether there is any motivation to combine it. US examiners often use the two criteria of 102 (novelty) and 103 (obviousness) to reject, and the combination of 103 often requires at least two comparative documents and a combined reason. The direction of the argument can be: the comparison document does not disclose a certain technical feature, the combination motivation is not valid, or the technical personnel in this field do not have a reasonable expectation of success. But the argument should be based on technical facts, not just empty words like 'this application has significant progress'. Another approach is to modify by incorporating the features of dependent claims into independent claims, provided that the original document supports it. We usually advise clients to prepare two sets of proposals, one for debate and the other for modification, based on the reviewer's historical review style and the strength of the comparative documents to determine the priority. In terms of case caliber, cases that are successfully argued are often compared to cases where there are technical differences in the documents themselves, rather than emphasizing commercial success.

In the layout of overseas patents, the response strategy should be linked to the pace of business

A response is not simply a legal action. The country where your product is sold, when it is launched, and who your competitors are will all affect how much money and time you are willing to spend for which country. For example, if the US market is the main battlefield, then USPTO's response is worth pursuing RCE or Appeal to PTAB; If it is only a defensive layout, it may be enough to delete the disputed rights and protect the authorization. Europe should pay attention to the issue of designated country annual fees. After authorization, each country will pay separately. The consequences and agency rules of failing to pay can be found in our other article on the breakdown of European patent annual fees that need to be paid separately in each designated country. When cross-border e-commerce is sued for patent infringement, the stability of overseas patents and the scope of claims directly determine the space for litigation. Relevant ideas can refer to Shenzhen's cross-border e-commerce patent infringement litigation and settlement. Enterprises engaged in cross-border protection of European and American trademark patents can also follow the rhythm arrangement of Shenzhen enterprises in cross-border protection of European and American trademark patents. As for the uncontrollability of US trademarks, please refer to Section 15 of the US Non Controversy. More overseas intellectual property content can be found atShenzhen foreign-related patent lawyerCheck the overseas intellectual property column.

Guangdong Zhiming Law Firm's Response Checklist

We have reviewed the case internally and usually follow these steps: first, check the date of publication, response period, extension rules, and cost level to confirm the entity type. Secondly, read the review opinions item by item, distinguish between formal defects and substantive rejection, and make changes to formal defects if possible, without leaving them at the end. Thirdly, compare the entire original application documents and indicate whether there is a direct recorded basis for the proposed modifications. Features without basis will not be added to the claims. Fourthly, compare the documents and break them down one by one, listing undisclosed features and gaps in motivation. Fifth, determine whether the main strategy is to argue or modify, and prepare alternative solutions. Sixth, confirm the commercial weight of the target country with the client before deciding whether to pursue RCE, divide the case, or appeal. This process does not guarantee authorization for every case, but it can block two low-level errors such as exceeding the scope and missing deadlines. When handling overseas patent layout cases, Guangdong Zhiming Law Firm will provide clients with a bilingual deadline table and a modification basis comparison table in both Chinese and English to facilitate internal decision-making.

After completing the reply, there are two things that are easy to forget

One is to track the official receipt after submitting the reply, confirm that the document has been accepted, and not think that sending it out is enough. There is a receipt for electronic submission (EFS Web) in the United States and confirmation from EPO's Online Filing, but it is not uncommon for agents to forward in a timely manner. Secondly, if the final review opinion is received after the response, a decision on whether to pursue RCE, appeal or abandon should be made within the deadline. This window is usually 2 to 3 months, and missing it will also be considered as giving up. Overseas patent layout is a long run, and it is normal for an application to span three to five years from submission to authorization. The management of deadline records and original document versions is more important than single response skills. If a company does not have an IP specialist internally, it is recommended to entrust deadline monitoring to a stable and cooperative agency team, rather than relying on a single person's email for reminders.

Author: Lawyer team of Shen Jinlong from Guangdong Zhiming Law Firm. For overseas patent examination opinions, deadline monitoring, and risk assessment beyond the scope of modification, please call the consultation hotline at 0755-25986969.

Disclaimer: The content of this article is a general sharing of practical information and does not constitute a legal opinion or commitment to the outcome of any specific case. Patent regulations, examination guidelines, and fee standards in various countries may be adjusted, and individual cases need to be judged based on the original application documents, official notifications, and the latest rules of the target country. Readers should not make decisions solely based on this article. It is recommended to consult professional agencies or lawyers for specific matters.

Frequently Asked Questions

What is the deadline for responding to US patent examination opinions and can it be extended?

The USPTO non final review opinion usually takes 3 months, and can be extended up to 6 months. An extension fee of 37 CFR 1.17 will be paid for each month of extension, and the fee will increase with the number of months. Small and micro entities have exemptions, but eligibility must be confirmed first. Missing the basic deadline will result in the application being considered abandoned, and only the restoration process can be pursued and proven to be unintentional.

How can it be considered as exceeding the scope when modifying the claims in response to the review opinion?

The United States refers to the written description and new matter prohibition of 35 USC 112 (a), EPO refers to Article 123 (2) of the EPC, and China refers to Article 33 of the Patent Law. The core is whether the modified content can be directly and unambiguously derived from the original application documents. Adding the numerical values of the lower features or embodiments in the accompanying drawings to the claims, which are not recorded in the original document, can easily be identified as a new matter.

Comparing the documents and rejecting them, can we only modify the minor claims?

not always. The rejection of the 103 combination requires a comparison of the corresponding features disclosed in the documents and a motivation to combine them, which can be argued from several aspects such as differences in the technical field, lack of valid motivation to combine, and no reasonable expectation of success. The premise is that the argument falls on technical facts. It is also possible to incorporate the features of dependent claims into independent claims, but there must be original document basis, and both sets of proposals are usually prepared simultaneously.

How long is the response period for European patent examination opinions, and what is the difference between it and the United States?

The response period for EPO examination opinions is generally 4 months, and in some cases, an extension of 2 months may be applied for. Unlike the United States, EPO does not have a buffer procedure such as RCE, and after the examination opinion, it may directly summon an oral hearing or make a rejection decision. The response strategy should be finalized earlier, and the verification of the revision basis should also be stricter.

What commercial factors should be considered in response strategies for overseas patent layout?

It depends on which country the product is sold in, the time it was launched, and the distribution of competitors. The main battlefield countries are worth investing in RCE or appealing, and defensive layouts may remove disputed rights and maintain authorization. At the same time, the annual fee costs of each country after authorization should be calculated to avoid continuous payments for designated countries that do not generate revenue.

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