When the Unitary Patent system launched in June 2023, the response from the patent community was cautious. The transition period, the opt-out window, the limited initial participating states — all gave patent owners reasons to wait and see before committing to any strategic change. Twelve months in, the picture is clearer. Enough filings have been made, enough opt-out decisions taken, and enough early enforcement experience accumulated that we can now make some practical judgments about what the Unitary Patent changes — and what it does not.

This briefing sets out what WLA's European IP practice group chairs have observed from the ground level — across Poland, Spain, Portugal, and the Netherlands — in terms of how their clients are adapting their patent strategies in response to the new system.

What the Unitary Patent actually delivers

The headline proposition of the Unitary Patent is well-known: a single patent right covering all participating EU member states, obtained through a single EPO grant procedure, with a single renewal fee. Before the Unitary Patent, validating a European patent in the major EU markets required individual national validation filings, national renewal fees, and in some jurisdictions translation requirements that added meaningful cost and administrative burden.

After twelve months, the cost advantage is real. For patent owners who would previously have validated in most EU member states, the Unitary Patent reduces the lifetime cost of maintaining a European patent portfolio by a material amount. WLA's patent specialists have modelled this for several clients and the savings, over a ten-year portfolio, are significant.

Key Takeaway for Patent Owners

The Unitary Patent delivers genuine cost savings for portfolio-scale filers. For individual patents covering 8 or more EU member states, the Unitary Patent is almost always cheaper than national validation. The enforcement picture is more nuanced — and the opt-out strategy requires active management.

The enforcement question — one court, one risk

The Unitary Patent is inseparable from the Unified Patent Court. A Unitary Patent can only be enforced through the UPC — and crucially, can only be invalidated centrally through the UPC as well. This is the feature that prompted the most cautious strategic thinking during the launch phase, and it remains the central strategic decision for patent owners today.

The opt-out window gave patent owners the ability to keep existing European patents in the national court system during the transitional period. Twelve months in, the opt-out decisions being made tell a clear story about how different types of patent owner are approaching the risk:

  • Large technology companies with broad, well-prosecuted portfolios are generally keeping patents in the UPC system and accepting the central revocation risk in exchange for the enforcement advantages
  • Pharmaceutical companies with high-value, narrowly-claimed patents are more frequently opting out — the risk of a single central revocation action on a key product patent outweighs the enforcement benefit
  • SMEs with limited patent budgets are finding the Unitary Patent's cost advantages compelling, and are less likely to opt out
Poland — WLA IP Intelligence

Poland participates in the Unitary Patent system. Polish patent practitioners are seeing increased inbound inquiries about UPC jurisdiction from Central European companies that previously relied on national patent offices. The Warsaw local division of the UPC received its first substantive filings in Q3 2024.

Portfolio strategy: what to do now

The most important practical observation from twelve months of Unitary Patent operation is that the opt-out window requires active management. Patent owners who have not yet reviewed their European portfolio against the opt-out deadline are at risk of losing the option to keep valuable patents in the national court system by default.

WLA's European IP practice group recommends the following review framework for patent owners with European portfolios:

  • Identify all granted European patents that have not yet opted out and assess the revocation risk profile of each
  • For patents where central revocation would be catastrophic to a core product or technology position, file opt-out registrations before the transitional period closes
  • For new European patent applications, consider the Unitary Patent route as the default for broad platform patents — and national validation as the preferred route for narrow, high-value product patents
  • Review translation requirements for national validations that have been retained — some member states have changed their requirements in response to the Unitary Patent system
"The Unitary Patent has changed the default economics of European patent protection. Patent owners who have not updated their European patent strategy since 2023 are almost certainly not optimising their portfolio."

The WLA perspective across jurisdictions

One of the most valuable observations from WLA's European IP network is the degree to which national practice is evolving in response to the Unitary Patent. In Spain, the transition has prompted a significant increase in domestic Spanish patent filings as companies re-examine whether their European patent strategy provides sufficient protection in the Spanish market specifically. In Poland, the Warsaw UPC local division is seeing more activity than many practitioners expected at this stage.

Spain — WLA IP Intelligence

WLA's Barcelona IP specialist observes increased Spanish national patent filings from companies reassessing their European strategy post-Unitary Patent. The Barcelona UPC local division is active and handling substantive cases across the full range of technology sectors.

Practical steps for WLA clients

For companies with active European patent portfolios, WLA's IP practice group recommends scheduling a comprehensive Unitary Patent strategy review. The review should cover the opt-out position of all granted European patents, the prosecution strategy for pending applications, the renewal fee structure going forward, and the enforcement strategy for any active infringement situations.

WLA's European IP co-practice team can co-ordinate this review across all relevant jurisdictions simultaneously — ensuring that the strategy is coherent across the full portfolio, not jurisdiction by jurisdiction in isolation.