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The patent EP3337341 was granted to Fontem on Jul 30, 2025. The application was filed on Aug 20, 2015 under application number EP15901499A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| NICOVENTURES | Oct 15, 2020 | D YOUNG | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | CN103932403 |
| INTERNATIONAL-SEARCH-REPORT | CN103948174 |
| INTERNATIONAL-SEARCH-REPORT | US2014109921 |
| OPPOSITION | CN103948174 |
| OPPOSITION | CN203851809U |
| OPPOSITION | EP0893071 |
| OPPOSITION | US2011226236 |
| OPPOSITION | US2014109921 |
| OPPOSITION | US2014305454 |
| OPPOSITION | US2015090279 |
| OPPOSITION | WO2015117704 |
| OPPOSITION | WO2016092261 |
| SEARCH | CN203851809U |
| SEARCH | EP2022349 |
| SEARCH | US2014305454 |
| SEARCH | WO2015070398 |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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Decision to grant a European patent
Search/Exam
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(Electronic) Receipt
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Filing of the translations of the claims
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French translation of claims
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German translation of the claims
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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Examination started
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Letter accompanying subsequently filed items
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European search opinion
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Information on Search Strategy
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Supplementary European search report
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Jul 24, 2018
Search started
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Communication to designated inventor
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(Electronic) Receipt
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Amended claims with annotations
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Feb 22, 2018
Request for entry into the European phase
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Information on entry into European phase
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Feb 23, 2017
Copy of the international search report
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Feb 23, 2017
Published international application - A1
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