European Patent Office (EPO) Fees to Be Adjusted from 1 April 2026: Enterprises Should Review Budgets and Filing Timelines for Overseas Patent Strategies in Advance

The European Patent Office (EPO) has announced that fees relating to European patents will be adjusted with effect from 1 April 2026. For enterprises planning European patent applications, PCT entry into the European phase, subsequent examination procedures, or renewal fee maintenance, these fee adjustments may affect the overall costs and filing schedules of their overseas patent strategies.

AIPT Group notes that Europe has long been an important region for many Taiwanese enterprises seeking technology protection, product sales, and international licensing. If enterprises already have plans to file European patent applications in the near term, they are advised to review the status of their cases, country-specific filing strategies, and budget allocations in advance to avoid increased application or maintenance costs arising from differences in when the new fees take effect.

Key EPO Fee Adjustments

According to the EPO announcement, a new fee schedule will apply to certain fees relating to European patents from 1 April 2026. In general, official fee adjustments may involve filing fees, search fees, examination fees, designation fees, page-related fees, extension- or validation-related fees, and fees that may arise when a PCT application enters the European phase.

For enterprises, although changes to individual fee items may appear limited, the overall budget may still differ significantly when multiple applications, multi-country patent strategies, patent portfolio maintenance, or PCT applications entering the European phase are involved at the same time. Accordingly, careful attention to filing schedules and the effective date of the new fees will become an important aspect of overseas patent management.

Potential Impact on Corporate Patent Strategies

European patent applications typically involve multiple costs, including technical disclosure, preparation of application documents, translation, representation, official fees, examination procedures, and subsequent renewal fee maintenance. When official fees are adjusted, enterprises should not only determine whether individual applications are affected but also review their overall patent investment strategies.

• Filing Schedule: If a case is approaching readiness for filing, enterprises should assess whether the required procedures can be completed before the new fees take effect.
• PCT Entry into the European Phase: Enterprises should pay attention to the deadline for entering the European phase, document preparation, and the timing of official fee payments.
• Patent Portfolio Budget: If an enterprise simultaneously holds multiple European patent applications or patent rights, it should recalculate its annual application and maintenance costs.
• Patent Strategy Priorities: Enterprises may reassess the necessity of their European patent strategies based on product markets, the distribution of competitors, technology life cycles, and licensing value.

Recommendations for Intellectual Property Strategy

AIPT Group recommends that, when facing adjustments to overseas patent fees, enterprises should not treat “whether to file before the fee increase” as the sole consideration. They should also assess technological maturity, the scope of the application, the filing strategy, and their subsequent maintenance capabilities. If document quality is insufficient or the patent strategy remains unclear, filing early may still result in higher costs during subsequent examination, response, or rights maintenance procedures.

Enterprises may conduct reviews in the following areas:

• Confirm Whether the Case Is Ready for Filing: This includes the completeness of the technical content, embodiments, drawings, claims, and priority information.
• Assess the Necessity of the European Market: Determine the commercial value of a European application based on product sales locations, competitor strategies, and manufacturing and supply-chain locations.
• Manage Official Deadlines and Fee Milestones: Particular attention should be paid to PCT entry into the European phase, requests for examination, response deadlines, and renewal fee payment schedules.
• Establish an Overseas Patent Budget: Application, examination, response, post-grant validation, and renewal fee maintenance costs should be incorporated into a single management process.

Overseas Patent Strategies Should Integrate Cost Management and Rights Strategy

The purpose of a patent strategy is not merely to obtain rights, but also to help enterprises establish technology protection, barriers to competition, and leverage in commercial negotiations within their target markets. Although adjustments to official fees are procedural information, they still represent an important opportunity for enterprises to review their overseas intellectual property strategies, the effectiveness of their patent portfolios, and their annual budget allocations.

AIPT Group will continue to monitor changes in systems and fees at major patent offices in Europe, the United States, Japan, China, and other jurisdictions, helping enterprises stay informed of overseas intellectual property developments and providing professional services relating to patent applications, PCT national phase entry, responses to overseas office actions, renewal fee maintenance, and global patent strategies.

Source: EPO Official Journal｜Decision on fee changes effective from 1 April 2026