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The patent EP2593288 was granted to Bayer on Apr 16, 2025. The application was filed on Jul 13, 2011 under application number EP11735420A. 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 |
|---|---|---|---|
| EXTRICOM EXTRUSION | Jul 11, 2018 | LS MP VON PUTTKAMER BERNGRUBER LOTH SPUHLER | ADMISSIBLE |
| COPERION | Jul 10, 2018 | RAU | ADMISSIBLE |
| INEOS STYROLUTION GROUP | Jul 5, 2018 | JACOBI | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102004010553 |
| DESCRIPTION | DE2035390 |
| DESCRIPTION | DE2248242 |
| DESCRIPTION | DE3631539 |
| DESCRIPTION | DE3631540 |
| DESCRIPTION | DE3704655 |
| DESCRIPTION | DE3704657 |
| DESCRIPTION | DE3832396 |
| DESCRIPTION | EP0363608 |
| DESCRIPTION | EP0640655 |
| DESCRIPTION | FR1561518 |
| DESCRIPTION | GB1409275 |
| DESCRIPTION | JP2008094984 |
| DESCRIPTION | US3644574 |
| DESCRIPTION | US4937285 |
| DESCRIPTION | US6180702 |
| DESCRIPTION | WO0000541 |
| DESCRIPTION | WO0118105 |
| DESCRIPTION | WO2004094128 |
| INTERNATIONAL-SEARCH-REPORT | DE102004010553 |
| INTERNATIONAL-SEARCH-REPORT | US2009088514 |
| INTERNATIONAL-SEARCH-REPORT | US4352568 |
| INTERNATIONAL-SEARCH-REPORT | US5487602 |
| INTERNATIONAL-SEARCH-REPORT | WO2009153000 |
| OPPOSITION | DE102004010553 |
| OPPOSITION | DE3014643 |
| OPPOSITION | DE69519431T |
| OPPOSITION | EP0037984 |
| OPPOSITION | US2009088514 |
| OPPOSITION | US4352568 |
| OPPOSITION | US5487602 |
| OPPOSITION | US6565358 |
| OPPOSITION | WO2009153000 |
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.
Date
Description
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Appeal
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Appeal
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(Electronic) Receipt
Appeal
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Withdrawal of an appeal
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Jan 11, 2023
Refund of fees
Appeal
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(Electronic) Receipt
Appeal
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Appeal
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Appeal
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Appeal
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Notice of appeal
Appeal
Oct 27, 2022
(Electronic) Receipt
Appeal
Oct 27, 2022
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Notice of appeal
Appeal
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Communication of amended entries
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Oct 19, 2017
Sep 14, 2017
Decision to grant a European patent
Search/Exam
Sep 1, 2017
(Electronic) Receipt
Search/Exam
Sep 1, 2017
English translation of the claims
Search/Exam
Sep 1, 2017
French translation of claims
Search/Exam
Sep 1, 2017
Letter accompanying subsequently filed items
Search/Exam
May 10, 2017
May 10, 2017
May 10, 2017
Intention to grant (signatures)
Search/Exam
May 10, 2017
Text intended for grant (clean copy)
Search/Exam
May 10, 2017
Mar 31, 2017
(Electronic) Receipt
Search/Exam
Mar 31, 2017
Amended claims with annotations
Search/Exam
Mar 31, 2017
Amended description with annotations
Search/Exam
Mar 31, 2017
Claims
Search/Exam
Mar 31, 2017
Description
Search/Exam
Mar 31, 2017
Letter accompanying subsequently filed items
Search/Exam
Mar 31, 2017
Jan 13, 2017
Annex to the communication
Search/Exam
Jan 13, 2017
Communication from the Examining Division
Search/Exam
Jan 4, 2017
Examination started
Search/Exam
Oct 10, 2016
Submission concerning representation
Search/Exam
Sep 30, 2015
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Sep 11, 2015
Aug 27, 2015
Aug 17, 2015
Jun 11, 2015
Sep 24, 2013
Sep 24, 2013
Amendments received before examination
Search/Exam
Sep 24, 2013
Claims
Search/Exam
Sep 24, 2013
Claims
Search/Exam
Sep 24, 2013
Matter concerning the application
Search/Exam
Sep 20, 2013
Sep 20, 2013
Amended claims with annotations
Search/Exam
Sep 20, 2013
Amendments received before examination
Search/Exam
Jul 16, 2013
May 24, 2013
Apr 24, 2013
Mar 15, 2013
Mar 8, 2013
Priority search results copy provided by EPO
Search/Exam
Feb 22, 2013
Communication to designated inventor
Search/Exam
Feb 22, 2013
Communication to designated inventor
Search/Exam
Feb 22, 2013
Communication to designated inventor
Search/Exam
Feb 22, 2013
Communication to designated inventor
Search/Exam
Jan 29, 2013
Dec 12, 2012
Dec 12, 2012
Notification of the recording of a change
Search/Exam
Dec 3, 2012
(Electronic) Receipt
Search/Exam
Dec 3, 2012
Annex
Search/Exam
Dec 3, 2012
Letter concerning the inventor
Search/Exam
Dec 3, 2012
Request for entry into the European phase
Search/Exam
Nov 23, 2012
Information on entry into European phase
Search/Exam
Feb 7, 2012
Jan 31, 2012
Jan 31, 2012
Jan 19, 2012
Copy of the international search report
Search/Exam
Jan 19, 2012
Copy of the international search report
Search/Exam
Jan 19, 2012
Published international application - A1
Search/Exam
Nov 1, 2011
Nov 1, 2011
Nov 1, 2011
Jul 13, 2011
(Electronic) Receipt
PCTRO
Jul 13, 2011
Abstract
PCTRO
Jul 13, 2011
Claims
PCTRO
Jul 13, 2011
Description
PCTRO
Jul 13, 2011
Drawings
PCTRO
Jul 13, 2011