Instant EPO Opposition Watch
For all events and deadlines of oppositions against European patents.
EPO Opposition Watch
Calculate | Track | Act
Let's try one of yours? Enter any EP Application Number:
How It Works
- 1
Enter Application Number
We retrieve real-time patent office data and present you the current situation.
- 2
EPO Holidays, Weekends, and Extensions
Our system calculates the correct due dates for you.
- 3
Historical Data
We present you with all past events.
- 4
All Cited Documents with Links
From the intl. phase, the examination phase, and the opposition phase.
- 5
Count-down to Opposition Deadline
We calculate the time left in days.
Best-In-Class Features
- Live Patent Register Data:
Actual facts about your patent document.
- Countries, Fees, Due Dates:
Calculated according to the EPC and National Laws.
- One-Click Country Selection:
Select countries for renewal. Price updates immediately.
- Clear conclusion:
We say it as it is: opposition is possible or not.
- Countdown to Opposition:
We tell you the number of days left to oppose the patent.
- Live Patent Status:
We tell you the patent status right away. No need to search.
- Complete history of relevant events:
Everything that happened from day one to today. Including all opposition events.
- Docketing convenience:
Save your searches to your dashboard.
- Reminders:
Set reminders to never miss an opposition deadline. (Coming soon)
- Bulk upload:
Insert a list of applications and watch their opposition status. (Coming soon)
Frequently asked questions
No. The results of the EPO Opposition Watch are calculated based on the data provided by the European Patent Office. We do not verify the accuracy of the data. We recommend consulting your patent attorney for legal advice.
However, our calculations are designed to verify plausibility of the data received. If you have any concerns, please reach out to us.
The EPO Opposition Watch is based on the data provided by the European Patent Office. If you believe that the data is incorrect, we recommend contacting the European Patent Office directly. We do not have the ability to change the data provided by the European Patent Office.
No. The EPO Opposition Watch is not legal advice. We recommend consulting your patent attorney for legal advice.
However, registered European Patent Attorneys are part of our team to ensure the quality of our services.
Yes. Any European patent can be opposed, including Unitary Patents.
Yes. A successful opposition against a European patent will also invalidate a Unitary Patent.
This is a critical deadline. If you miss the opposition deadline, you will lose the opportunity to challenge the patent before the European Patent Office. The only way to challenge the patent after the deadline is through national courts or the Unified Patent Court, if there is a Unitary Patent.
Yes. Your European patent attorney can file an opposition on your behalf without revealing your identity.
The office fee for filing an opposition is €880. The attorney fees vary depending on the complexity of the case and the attorney's hourly rate. Typically, the total costs range between 8,000 and 20,000 EUR.
The opposition procedure typically takes 2-3 years. However, the duration can vary depending on the complexity of the case and the workload of the European Patent Office.
According to EPO statistics, 30% of opposed patents are revoked, 40% are maintained in amended form, and 30% are maintained as granted. The success rate of an opposition depends on the strength of the opposition grounds and the evidence provided.
No. The decision of the opposition division can be appealed to the EPO Boards of Appeal. The appeal procedure typically takes 2-3 years.