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The patent EP3142992 was granted to Basf on Feb 16, 2022. The application was filed on May 13, 2015 under application number EP15722197A. 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 |
|---|---|---|---|
| CHEVRON PHILLIPS CHEMICAL LP | Jun 26, 2019 | POTTER CLARKSON | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2011218359 |
| INTERNATIONAL-SEARCH-REPORT | WO2011107559 |
| INTERNATIONAL-SEARCH-REPORT | WO2013098772 |
| INTERNATIONAL-SEARCH-REPORT | WO2014012908 |
| OPPOSITION | CA2791834 |
| OPPOSITION | US2004229846 |
| OPPOSITION | US2007021610 |
| OPPOSITION | WO2013098772 |
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
Search/Exam
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French translation of claims
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German translation of the claims
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(Electronic) Receipt
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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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(Electronic) Receipt
Search/Exam
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Amended description with annotations
Search/Exam
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Description
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Letter accompanying subsequently filed items
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Annex to the communication
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Communication from the Examining Division
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Letter which had not been notified
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Letter which had not been notified
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(Electronic) Receipt
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Amended claims with annotations
Search/Exam
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Amendments received before examination
Search/Exam
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Letter accompanying subsequently filed items
Search/Exam
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Communication to designated inventor
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Notification of the recording of a change
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(Electronic) Receipt
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Nov 8, 2016
Request for entry into the European phase
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Sep 23, 2016
Information on entry into European phase
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Mar 3, 2016
CDS Clean up - amended applicant details
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Copy of the international search report
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Nov 19, 2015
Published international application - A1
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Abstract
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Description
PCTRO
May 13, 2015