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The patent EP2737209 was granted to Ecolab USA on Nov 28, 2018. The application was filed on Jul 28, 2011 under application number EP11736383A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| KNF FLODOS | Aug 27, 2019 | MAUCHER JENKINS PATENT UND RECHTSANWALTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | DE19623537 |
| INTERNATIONAL-SEARCH-REPORT | EP0077908 |
| INTERNATIONAL-SEARCH-REPORT | US2004234377 |
| INTERNATIONAL-SEARCH-REPORT | US4925371 |
| INTERNATIONAL-SEARCH-REPORT | US5676527 |
| INTERNATIONAL-SEARCH-REPORT | US5932987 |
| INTERNATIONAL-SEARCH-REPORT | US5971723 |
| OPPOSITION | WO03054392 |
| OPPOSITION | WO9703290 |
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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Nov 27, 2025
Nov 27, 2025
Nov 7, 2025
Nov 4, 2025
(Electronic) Receipt
Appeal
Nov 4, 2025
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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
May 15, 2024
(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Jan 16, 2024
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Nov 28, 2023
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Non-scannable object
Appeal
Nov 27, 2023
(Electronic) Receipt
Appeal
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Appeal
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(Electronic) Receipt
Appeal
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Notice of appeal
Appeal
Sep 25, 2023
(Electronic) Receipt
Appeal
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Notice of appeal
Appeal
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Dec 10, 2018
Nov 2, 2018
Decision to grant a European patent
Search/Exam
Oct 16, 2018
(Electronic) Receipt
Search/Exam
Oct 16, 2018
Filing of the translations of the claims
Search/Exam
Oct 16, 2018
French translation of claims
Search/Exam
Oct 16, 2018
German translation of the claims
Search/Exam
Oct 16, 2018
Letter accompanying subsequently filed items
Search/Exam
Jun 13, 2018
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Intention to grant (signatures)
Search/Exam
Jun 13, 2018
Text intended for grant (clean copy)
Search/Exam
Jun 13, 2018
Sep 4, 2017
(Electronic) Receipt
Search/Exam
Sep 4, 2017
Description
Search/Exam
Sep 4, 2017
Letter accompanying subsequently filed items
Search/Exam
Sep 4, 2017
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Annex to the communication
Search/Exam
Jun 16, 2017
Communication from the Examining Division
Search/Exam
Jun 6, 2017
(Electronic) Receipt
Search/Exam
Jun 6, 2017
Amended claims with annotations
Search/Exam
Jun 6, 2017
Claims
Search/Exam
Jun 6, 2017
Letter accompanying subsequently filed items
Search/Exam
Jun 6, 2017
Feb 17, 2017
Annex to the communication
Search/Exam
Feb 17, 2017
Communication from the Examining Division
Search/Exam
Feb 13, 2017
Examination started
Search/Exam
Dec 7, 2016
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Submission concerning representation
Search/Exam
Sep 25, 2014
(Electronic) Receipt
Search/Exam
Sep 25, 2014
Sep 25, 2014
Amended claims with annotations
Search/Exam
Sep 25, 2014
Amendments received before examination
Search/Exam
Sep 25, 2014
Letter accompanying subsequently filed items
Search/Exam
May 8, 2014
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Mar 5, 2014
Communication to designated inventor
Search/Exam
Mar 5, 2014
Communication to designated inventor
Search/Exam
Feb 20, 2014
(Electronic) Receipt
Search/Exam
Feb 20, 2014
Request for entry into the European phase
Search/Exam
Jan 24, 2014
Jan 24, 2014
Notification of the recording of a change
Search/Exam
Dec 4, 2013
Information on entry into European phase
Search/Exam
Aug 27, 2013
Aug 27, 2013
Notification of the recording of a change
Search/Exam
Jan 31, 2013
Copy of the international search report
Search/Exam
Jan 31, 2013
Published international application - A1
Search/Exam
May 31, 2012
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Jul 28, 2011
(Electronic) Receipt
PCTRO
Jul 28, 2011
Abstract
PCTRO
Jul 28, 2011
Claims
PCTRO
Jul 28, 2011
Description
PCTRO
Jul 28, 2011
Drawings
PCTRO