The annual fee for European patents must be paid separately in each designated country, and the consequences of underpayment and agency rules should be clarified in one go. The deadlines for each country should be arranged in advance

The annual fee for European patents is not simply paid to the European Patent Office (EPO). After authorization, the annual fee must be paid separately to the patent office of each designated country where it takes effect, with different deadlines, amounts, grace periods, and agency requirements in each country. The direct consequence of underpayment is the invalidation of the country's patent rights, which usually can only be restored through restoration procedures, with costs and uncertainties increasing exponentially. In practice, we generally recommend that customers establish annual fee ledgers for each country immediately after the authorization announcement, and arrange payment deadlines in advance by country.

Why do annual fees need to be paid in various countries after authorization, as EPO no longer regulates them

Many people think that European patents are a 'unified patent', but in fact, traditional European patents still follow the old path of 'EPO unified examination, each country taking effect separately'. After the authorization announcement, EPO is no longer responsible for maintaining annual fees, and the obligation of annual fees is transferred to the contracting states of the European Patent Convention (EPC). That is to say, if a European patent is effective in Germany, France, Italy, Spain, and the Netherlands, it means you have to face five sets of annual fee rules and five payment windows. After the launch of the Unified Patent (UP) system on June 1, 2023, those who choose to have a unified patent effect can pay an annual fee to the EPO in one lump sum. However, a large number of Chinese overseas enterprises still choose the traditional effective method due to considerations such as cost, litigation location, and invalidation risk, so they must return to the track of "one country, one payment". Cross border sellers who operate multiple Amazon European sites simultaneously often have one patent covering seven or eight countries, and the complexity of annual fee management is much higher than in the US market.

There are significant differences in deadlines among countries, so don't use one calendar to manage all countries

Article 86 of EPC stipulates that the annual fee shall be calculated from the application date (not the authorization date) and shall expire annually. But there are significant differences in the specific implementation of the 'expiration date' among countries. The annual fee of the German Patent and Trademark Office (DPMA) expires on the last day of the month in which the application is filed, with a grace period of 6 months; The French Industrial Property Office (INPI) also takes the anniversary of the application date as the node, with a grace period of 6 months, but the surcharge increases step by step; The annual fee of the UK Intellectual Property Office (UKIPO) expires on the anniversary of the application date, with a grace period of 6 months. After the deadline, there is a further relief window of 6 months, but reasons must be submitted and higher fees must be paid. The grace period in Italy and Spain is also 6 months, but the surcharge ratio and calculation method are different. The most common problem in practice is the mixing of "application date anniversary system" and "natural year system". Customers use one Excel sheet to uniformly record December 31st, but the German one expired in March. We generally recommend categorizing by country, with each country separately labeled with three levels of nodes: expiration date, grace period expiration date, and restoration deadline.

Failing to pay is not immediately fatal, but the recovery window and cost are both expensive

The consequences of failing to pay annual fees are divided into two levels. The first layer is to make up the payment within the grace period: most contracting states give a grace period of 6 months, and the annual fee and additional fee can be made up without interruption of rights. The second layer is that after the grace period expires, the patent right becomes invalid in that country and can only be restored through the restoration process. Restoration is not automatic, and it is necessary to prove that "all due care" has been fulfilled. This standard of proof is quite strict in the precedents of the EPO and various courts, and simply stating that "the agent forgot" is usually not enough. The deadline for recovery requests is generally 2 months after the missed deadline or 2 months after the grace period expires (whichever is later), and both recovery fees and annual fees must be paid. In terms of cost, restoring a European patent in a single country usually incurs official and agency fees in the thousands of RMB range. If multiple countries are involved in simultaneous restoration, the cost will rapidly increase. Even more troublesome is that during the expiration period, if someone implements your technology in that country, it is difficult for you to claim infringement compensation.

Proxy rules: Who has the authority to pay, who can pay on behalf of, and what foreign applicants must pay attention to

Most contracting states do not require foreign applicants to appoint local patent agents to pay fees, but almost all require them in practice. The reason is that the payment systems, currencies, and payment methods of different countries are not unified: DPMA in Germany accepts SEPA transfers, INPI in France has online accounts, UKIPO in the UK uses credit cards or account deductions, and UIBM in Italy still relies on local agents for some processes. Non European Economic Area (EEA) applicants must appoint a European patent agent recognized by EPC during the EPO stage, and enter the maintenance stage in various countries after authorization. Many countries also require local registered agents to handle restoration, transfer of rights registration and other affairs. A common misconception among cross-border sellers is that domestic agents can easily pay the annual fees for each country, but domestic agents often do not have foreign exchange payment channels and local agent networks for each country. Once the intermediate link is cut off, it is difficult to define responsibility. We usually recommend that customers confirm a service provider with the ability to pay annual fees for European countries directly after authorization, specifying how many days in advance the payment notice is sent, who will review it, and who will bear the responsibility if it fails.

Unified patent is not a panacea, three accounts need to be calculated before choosing

Unified Patent (UP) centralizes annual fees to be paid by EPO, which may seem convenient, but the cost is "win-win": it becomes invalid in the Unified Patent Court (UPC), and all participating countries become invalid together. Under the traditional effective method, your invalidity in Germany does not affect the effectiveness of France and the Netherlands. So choosing between UP and traditional implementation requires three calculations: first, the total annual fee. UP's annual fee level is usually more cost-effective for a combination covering more than 4 countries, while covering 2-3 core countries may be more cost-effective through traditional methods; The second is litigation strategy. The UPC first instance judgment can take effect simultaneously in multiple countries, and the attacking side likes it, while the defending side should be cautious; The third is the risk of invalidity, as patents with insufficient technical stability and easy challenges are more secure when dispersed and effective. There is no standard answer for this part of the decision, and it needs to be judged on a case by case basis based on product market, competitor distribution, and patent strength. Reference can be made to the European layout ideas in the intellectual property legal services of the United States and the European Union.

Treat the annual fee ledger as asset management, rather than administrative miscellaneous matters

The root cause of annual fee underpayment is rarely 'not knowing what to pay', but 'no one is truly responsible'. A feasible approach is to establish a ledger within 30 days after the authorization announcement, with fields including at least the patent number, application date, effective country, annual fee expiration date for each country, grace period expiration date, restoration deadline, local agent contact information, and payment voucher filing path. Review once every quarter, send the first round of reminders 60 days before payment, and send the second round and confirm payment 30 days before payment. For companies that are simultaneously located in multiple European countries, the United States, Japan, and South Korea, it is best to include annual fee management in a unified intellectual property calendar along with trademark renewal and copyright registration. The pace of cross-border e-commerce sellers is faster, and the product lifecycle is often only 2-3 years. If the patent annual fee has exceeded the expected revenue of the product, timely evaluation and abandonment of certain countries' maintenance is also a rational choice, without having to pay for "face". More overseas maintenance and layout issues can be seenOverseas intellectual propertyandGlobal multi country trademark and patent layoutTwo columns.

Several noteworthy changes in 2026

Entering 2026, the EPO and some contracting states will continue to promote the electronicization of annual fees, and the proportion of electronic delivery of payment notices and receipts will further increase. This is a good thing for cross-border enterprises, but it also means that "not receiving paper letters" can no longer be used as a defense for underpayment. The number of countries covered by unified patents is still increasing, and the cost-effectiveness threshold for choosing UP will shift with the increase of participating countries. In addition, the accumulation of UPC precedents is affecting the strategy of enterprises in choosing effective methods, and the value of dispersed effectiveness is increasing for patents with high invalidation risks. It is recommended to conduct at least one annual annual annual fee stress test for the European patent portfolio, comparing the annual fee cash flow for the next three years with market revenue in various countries.

The foreign-related intellectual property team of Guangdong Zhiming Law Firm has been handling trademark, patent, and copyright business in the United States, European Union, and various European countries for a long time. They have mature operational processes in European patent annual fee payment, national restoration procedures, and unified patent and UPC strategy selection. If you need to verify the annual fee node of your company's European patents or evaluate the feasibility of restoration, please call our hotline at 0755-25986969 to contact us.

Disclaimer: This article is only for general legal information sharing and does not constitute legal advice on any specific case. The annual fee amount, grace period, restoration conditions, and agency requirements of each country may be adjusted at any time. For specific cases, please refer to the latest regulations of the competent authority and the written opinions of professional agents.