When EUIPO publishes a trademark application, anyone with earlier rights has three months from the publication date to file an opposition (Article 46 EUTMR). Enter a publication date and this calculator gives you the exact end of that window.
The opposition period is three calendar months, not 90 days. It ends on the day of the third month that carries the same number as the publication date. If that month has no such day (a publication on 30 November, for example), the period ends on the last day of that month. If the final day falls on a weekend or a day EUIPO is closed, the deadline moves to the next working day.
This calculator applies the same-day rule, the month-end rule, and the weekend extension. It does not know EUIPO closing days and public holidays, so treat the result as a very close estimate and verify the exact date in eSearch or with your representative before relying on it.
Look up the application in EUIPO eSearch and check the "Publication date" field, or find the mark in the EU Trade Marks Bulletin. Note that the publication date is not the filing date: the clock starts at publication.
EUIPO does not notify existing trademark holders when a conflicting application is published. Unless you or your representative watches the register, the three months usually pass silently. Once the opposition window closes, your options shrink to cancellation proceedings, which are slower and more expensive.
Sentin watches EUIPO for you every morning and shows a live countdown for every conflicting filing it finds. You will never discover a deadline after it has passed.
Get automatic deadline countdowns →See also: The 90-day opposition deadline explained · Free trademark similarity checker