UPC evidence fees increased by 1,329% in 2026. Discover why litigation-grade translation is now a financial risk mitigation strategy for IP teams.
On January 1, 2026, the Unified Patent Court put into effect a major overhaul of its fee structure. Most core proceedings such as infringement and revocation actions saw fixed fees rise by roughly one-third across the board.
But one change stands out for everyone thinking about evidence: applications to preserve evidence or for inspection orders jumped from €350 to €5,000. That is an increase of 1,329%.
For IP teams and litigators, the message is clear. When a procedural step commands a four-figure investment, there is far less room for imprecision — including in the way evidence is translated.
To understand this new scenario, we need to look at what changed in the UPC’s fee structure, how evidence is now evaluated, and where language vulnerabilities are most likely to surface.
From €350 to €5,000: What Changed on January 1, 2026
The 2026 fee revision marks the end of the UPC’s introductory phase and introduces a revised fee structure across proceedings. Nowhere is this clearer than in evidence-related applications.
Why evidence preservation is no longer “procedural overhead.”
Until the end of 2025, evidence preservation functioned as a low-risk tactical tool. At €350 per application, it barely registered in litigation budgets and was often used as a probing move rather than a decisive procedural commitment.
At €5,000, that dynamic fundamentally changes.
In effect, the UPC has elevated evidence preservation to the same strategic tier as infringement and revocation actions. The fee increase also functions as a filter: weak, poorly prepared, or vulnerable to challenge applications are no longer economically tolerable.
UPC fee comparison 2025 vs. 2026.
| UPC Application Type |
2025 Fixed Fee |
2026 Fixed Fee |
Increase |
| Infringement action |
€11,000 |
€14,600 |
+32.7% |
| Revocation action (standalone) |
€20,000 |
€26,500 |
+32.5% |
| Counterclaim for revocation |
€11,000 |
€14,600 |
+32.7% |
| Provisional measures |
€11,000 |
€14,600 |
+32.7% |
| Preserve evidence / inspection |
€350 |
€5,000 |
+1,328.6% |
| Order to freeze assets |
€1,000 |
€5,000 |
+400% |
| Application for rehearing |
€2,500 |
€14,600 |
+484% |
The conclusion is clear: evidence-related risk is now front-loaded. A single failed application represents a sunk cost that cannot be amortized at the outset of the case.
When Evidence Becomes Expensive, Language Becomes Fragile
UPC litigation is inherently multilingual. Evidence often originates in German, French, Italian, or Spanish, yet must be filed in the language of proceedings under Rule 7.1 of the Rules of Procedure.
This creates a procedural choke point: translation is the gateway to admissibility.
How Translation Errors Become Procedural Failures
In a court designed to reach oral hearings within roughly 12 months, linguistic weaknesses compound quickly.
- Inadmissibility.
If a defendant identifies material inaccuracies in a translated exhibit, the court may exclude the evidence entirely. After a €5,000 filing fee (plus inspection and expert costs), the claimant’s evidence strategy can collapse in a single procedural motion.
- Scope misalignment.
Patent claims are linguistic precision instruments. A mistranslation that shifts how a claim feature “reads on” to an accused product can break the infringement analysis.
- Timing and re-filing risk.
UPC deadlines are tight and often non-extendable. If evidence is rejected due to translation defects, there may be no procedural window to correct and re-file before the written phase closes.
At this level of cost, translation errors are no longer easily correctable. In some cases, they may be impossible to remedy in time.
Why “Technically Correct” Is No Longer Enough
A translation can be scientifically accurate yet procedurally indefensible.
What the UPC increasingly demands is litigation-defensible language: terminology that aligns with:
- The underlying technology.
- Claim construction principles.
- The patent’s own internal lexicon.
- The prosecution history.
This is where challenges under UPC Rule 7.2 come into play. Any perceived ambiguity gives the opposing party an opportunity to attack the accuracy of the translation itself—forcing certification, court-ordered re-translation, or outright exclusion of the evidence.
Translation as Evidence Insurance
Once €5,000 becomes the baseline cost of an evidence application, translation economics flip.
The relevant question is no longer “How much does the translation cost?” It becomes “What does a failed translation cost us?”
A challenged or excluded translation can trigger:
- Mandatory re-translation under tight deadlines.
- Court-appointed linguistic experts.
- Disruption of the interim procedure.
- Loss of evidentiary momentum.
Against that backdrop, investing in defensible translation at the UPC is not an overhead expense. It is evidence insurance, a preventive measure designed to protect a significant procedural investment.
English Dominance and the UPC’s “Holistic Fairness” Approach
Another factor amplifying linguistic risk is the growing dominance of English. As of 2025, English accounts for approximately 54% of UPC cases, overtaking German as the dominant language of proceedings.
This trend is reinforced by the Court of Appeal’s application of what commentators describe as a “holistic fairness” test when assessing requests to change the language of proceedings.
Why language is now strategic.
The court weighs:
-
- The language of the technology.
- The language of the evidence.
- The parties’ working languages.
- The risk of procedural delay.
Where interests are balanced, the defendant’s position prevails, often favoring English.
For litigants, this means translations must remain robust even if proceedings shift languages mid-case. Preparing evidence for only the initial language is no longer sufficient.
What IP Teams Need to Re-Evaluate in 2026
The new fee regime demands a more integrated approach to evidence and language. Ask yourself these three strategic questions before translating evidence:
- Is the evidence litigation-ready for the target division?
Can it survive a Rule 7.2 accuracy challenge without delay? - Is the translation aligned with the prosecution history?
The UPC increasingly uses file history as an interpretative aid. - Does the budget reflect the new evidence surcharge?
€5,000 is now the entry point, not the ceiling.
SMEs: Fee Relief
The UPC has increased the fee reduction for SMEs from 40% to 50% in 2026. While welcome, this does not eliminate risk.
A discounted €2,500 evidence application is still a major investment, particularly for SMEs without in-house linguistic or IP resources. For smaller entities, a failed translation is proportionally more damaging.
Appeals: Where Linguistic Errors Become Even More Expensive
The 2026 regime also reinforces the financial separation between first-instance and appeal proceedings. Value-based fees for appeals are now calculated independently, with an additional surcharge applied, signalling a clear policy preference for resolving disputes at first instance.
The implication is clear: errors made early, especially linguistic ones, become more expensive to fix later.
When Procedure Gets This Expensive, Language Must Be Defensible
The UPC’s 2026 fee structure marks the end of low-cost procedural experimentation. Evidence preservation is now a high-stakes financial commitment, and language is one of the most vulnerable points of attack.
Between €5,000 evidence filings, value-based multipliers, Rule 7.2 challenges, and English-dominant proceedings, this is where Montero Language Services’ IP DNA matters.
With over two decades of experience in patent translation, we approach language as defensible evidence, prepared to withstand procedural scrutiny and challenges to admissibility.
In the UPC of 2026, when procedure costs this much, language must withstand scrutiny. If your evidence is worth filing, speak with us about how to defend it.
