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The patent EP1803837 was granted to Enthone on Oct 23, 2024. The application was filed on Nov 25, 2005 under application number EP05025726A. 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 |
|---|---|---|---|
| ATOTECH DEUTSCHLAND | Jun 11, 2019 | MKS ASSOCIATION | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE4318793 |
| DESCRIPTION | DE4328876 |
| DESCRIPTION | EP1408141 |
| DESCRIPTION | EP1717351 |
| EXAMINATION | DE4328876 |
| EXAMINATION | US2002153254 |
| OPPOSITION | DD280560 |
| OPPOSITION | DE4031526 |
| OPPOSITION | DE4123651 |
| OPPOSITION | DE4318793 |
| OPPOSITION | DE4328876 |
| OPPOSITION | EP0601504 |
| OPPOSITION | JPH05214599 |
| OPPOSITION | JPS55104500 |
| OPPOSITION | JPS59197555 |
| OPPOSITION | US2002153254 |
| OPPOSITION | US3656940 |
| OPPOSITION | US3663403 |
| OPPOSITION | US3707447 |
| OPPOSITION | US5885462 |
| SEARCH | DE4031526 |
| SEARCH | JPS59197555 |
| SEARCH | US3663403 |
| SEARCH | US5885462 |
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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Sep 26, 2024
Sep 26, 2024
Sep 18, 2024
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Jun 11, 2024
Refund of fees
Search/Exam
May 29, 2024
May 29, 2024
May 29, 2024
May 29, 2024
May 28, 2024
(Electronic) Receipt
Appeal
May 28, 2024
May 28, 2024
Withdrawal of an appeal
Appeal
May 21, 2024
May 21, 2024
May 15, 2024
(Electronic) Receipt
Appeal
May 15, 2024
May 15, 2024
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Jan 23, 2024
(Electronic) Receipt
Appeal
Jan 23, 2024
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Dec 14, 2023
Advice of delivery
Appeal
Dec 14, 2023
Dec 14, 2023
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Jul 6, 2023
Jun 30, 2023
Letter accompanying subsequently filed items
Search/Exam
Jun 30, 2023
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(Electronic) Receipt
Appeal
Jan 16, 2023
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Reply to appeal
Appeal
Sep 8, 2022
Sep 5, 2022
(Electronic) Receipt
Appeal
Sep 5, 2022
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Sep 2, 2022
(Electronic) Receipt
Appeal
Sep 2, 2022
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Sep 1, 2022
Document concerning representation
Search/Exam
Sep 1, 2022
Document concerning representation
Search/Exam
Jul 8, 2022
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(Electronic) Receipt
Appeal
Jul 4, 2022
Jul 4, 2022
Notice of appeal
Appeal
May 16, 2022
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Sep 24, 2018
Aug 17, 2018
Decision to grant a European patent
Search/Exam
Jul 25, 2018
(Electronic) Receipt
Search/Exam
Jul 25, 2018
English translation of the claims
Search/Exam
Jul 25, 2018
Filing of the translations of the claims
Search/Exam
Jul 25, 2018
French translation of claims
Search/Exam
Jul 25, 2018
Letter accompanying subsequently filed items
Search/Exam
May 2, 2018
May 2, 2018
May 2, 2018
Intention to grant (signatures)
Search/Exam
May 2, 2018
Text intended for grant (clean copy)
Search/Exam
May 2, 2018
Feb 2, 2018
(Electronic) Receipt
Search/Exam
Feb 2, 2018
Amended claims with annotations
Search/Exam
Feb 2, 2018
Claims
Search/Exam
Feb 2, 2018
Description
Search/Exam
Feb 2, 2018
Letter accompanying subsequently filed items
Search/Exam
Feb 2, 2018
Oct 25, 2017
Annex to the communication
Search/Exam
Oct 25, 2017
Communication from the Examining Division
Search/Exam
Aug 24, 2017
Aug 15, 2017
Dec 14, 2016
Refund of fees
Search/Exam
Oct 28, 2016
Oct 14, 2016
Oct 15, 2015
Amended claims with annotations
Search/Exam
Oct 15, 2015
Claims
Search/Exam
Oct 15, 2015
Description
Search/Exam
Oct 15, 2015
Oct 13, 2015
Amended claims with annotations
Search/Exam
Oct 13, 2015
Claims
Search/Exam
Oct 13, 2015
Description
Search/Exam
Oct 13, 2015
Jun 23, 2015
Annex to the communication
Search/Exam
Jun 23, 2015
Communication from the Examining Division
Search/Exam
Nov 10, 2014
Nov 4, 2014
Aug 30, 2013
Aug 30, 2013
Jul 30, 2013
Authorisation
Search/Exam
Jul 30, 2013
Jul 18, 2013
Invitation to file an authorisation
Search/Exam
Jul 5, 2013
Aug 17, 2012
Claims
Search/Exam
Aug 17, 2012
Jun 19, 2012
Annex to the communication
Search/Exam
Jun 19, 2012
Communication from the Examining Division
Search/Exam
Jan 25, 2012
Dec 21, 2011
General enquiry
Search/Exam
Jul 8, 2008
Final instructions (loss of partial rights)
Search/Exam
Feb 20, 2008
Nov 2, 2007
Submission concerning representation
Search/Exam
Jul 9, 2007
Jul 4, 2007
Claims
Search/Exam
Jul 4, 2007
Jun 6, 2007
Notification of forthcoming publication
Search/Exam
Mar 29, 2007
Communication from the Examining Division
Search/Exam
Oct 24, 2006
May 24, 2006
May 24, 2006
European search opinion
Search/Exam
May 24, 2006
European search report
Search/Exam
Dec 21, 2005
Authorisation
Search/Exam
Dec 21, 2005
Designation of inventor
Search/Exam
Dec 21, 2005
Letter concerning the inventor
Search/Exam
Dec 15, 2005
Deficiency in designation of inventor
Search/Exam
Dec 13, 2005
Notice on debiting of fees
Search/Exam
Nov 29, 2005
Abstract
Search/Exam
Nov 29, 2005
Claims
Search/Exam
Nov 29, 2005
Description
Search/Exam
Nov 29, 2005
Drawings
Search/Exam
Nov 29, 2005
Request for grant of a European patent
Search/Exam
Nov 25, 2005
Request for grant of a European patent
Search/Exam
Nov 25, 2005