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The patent EP2420223 was granted to Alcon Research on Jul 19, 2017. The application was filed on Mar 3, 2009 under application number EP11184501A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| ALFRED E TIEFENBACHER | Apr 19, 2018 | GILL JENNINGS & EVERY | ADMISSIBLE |
| GENERICS UK TRADING MYLAN | Apr 19, 2018 | GILL JENNINGS & EVERY | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US3931319 |
| DESCRIPTION | US4027020 |
| DESCRIPTION | US4407791 |
| DESCRIPTION | US4525346 |
| DESCRIPTION | US4836986 |
| DESCRIPTION | US5037647 |
| DESCRIPTION | US5300287 |
| DESCRIPTION | US5505953 |
| DESCRIPTION | US5603929 |
| DESCRIPTION | US5631287 |
| DESCRIPTION | US5653972 |
| DESCRIPTION | US5811466 |
| DESCRIPTION | US5849792 |
| DESCRIPTION | US6011062 |
| DESCRIPTION | US6143799 |
| DESCRIPTION | US6365636 |
| DESCRIPTION | US6503497 |
| DESCRIPTION | US6849253 |
| DESCRIPTION | WO9109523 |
| OPPOSITION | EP0000002 |
| OPPOSITION | EP0462460 |
| OPPOSITION | EP2420223 |
| OPPOSITION | US2005239900 |
| OPPOSITION | US2006229219 |
| OPPOSITION | US6743439 |
| OPPOSITION | WO0249615 |
| OPPOSITION | WO2005060953 |
| OPPOSITION | WO2009117242 |
| OPPOSITION | WO2009117316 |
| OPPOSITION | WO9321903 |
| OPPOSITION | WO9825279 |
| OTHER | EP2254549 |
| SEARCH | EP0462460 |
| SEARCH | US2005239900 |
| SEARCH | US6743439 |
| SEARCH | WO9321903 |
| SEARCH | WO9852579 |
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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Notice of appeal
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OPPO
Sep 10, 2019
Claims
OPPO
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Claims
OPPO
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Authorisation
OPPO
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Jul 19, 2017
Jun 22, 2017
Decision to grant a European patent
Search/Exam
Jun 1, 2017
(Electronic) Receipt
Search/Exam
Jun 1, 2017
Filing of the translations of the claims
Search/Exam
Jun 1, 2017
French translation of claims
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Jun 1, 2017
German translation of the claims
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Jun 1, 2017
Letter accompanying subsequently filed items
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May 30, 2017
May 30, 2017
May 30, 2017
Intention to grant (signatures)
Search/Exam
May 30, 2017
Text intended for grant (clean copy)
Search/Exam
May 30, 2017
Mar 31, 2017
Mar 16, 2017
(Electronic) Receipt
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Mar 16, 2017
Enquiry as to the processing of the file
Search/Exam
Mar 16, 2017
Letter accompanying subsequently filed items
Search/Exam
Feb 28, 2017
(Electronic) Receipt
Search/Exam
Feb 28, 2017
Letter accompanying subsequently filed items
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Feb 28, 2017
Matter concerning the application
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Feb 23, 2017
Annex to the communication
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Feb 23, 2017
Feb 23, 2017
Feb 16, 2017
(Electronic) Receipt
Search/Exam
Feb 16, 2017
Amended description with annotations
Search/Exam
Feb 16, 2017
Description
Search/Exam
Feb 16, 2017
Letter accompanying subsequently filed items
Search/Exam
Feb 16, 2017
Oct 26, 2016
(Electronic) Receipt
Search/Exam
Oct 26, 2016
Amended claims with annotations
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Oct 26, 2016
Amended description with annotations
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Oct 26, 2016
Claims
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Oct 26, 2016
Description
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Oct 26, 2016
Letter accompanying subsequently filed items
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Oct 26, 2016
Oct 24, 2016
Annex to the communication
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Oct 24, 2016
Communication from the Examining Division
Search/Exam
Oct 21, 2016
(Electronic) Receipt
Search/Exam
Oct 21, 2016
Oct 21, 2016
Letter accompanying subsequently filed items
Search/Exam
Aug 24, 2016
Jul 29, 2016
Letter accompanying subsequently filed items
Search/Exam
Jul 29, 2016
Payment of fees and costs
Search/Exam
Jul 29, 2016
Payment of fees and costs
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Jul 29, 2016
Jul 8, 2016
(Electronic) Receipt
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Jul 8, 2016
Amended claims with annotations
Search/Exam
Jul 8, 2016
Claims
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Jul 8, 2016
Description
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Jul 8, 2016
Letter accompanying subsequently filed items
Search/Exam
Jul 8, 2016
Jun 24, 2016
Annex to the communication
Search/Exam
Jun 24, 2016
Communication from the Examining Division
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May 20, 2016
(Electronic) Receipt
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May 20, 2016
Letter accompanying subsequently filed items
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Mar 7, 2016
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Mar 4, 2016
(Electronic) Receipt
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Mar 4, 2016
Letter accompanying subsequently filed items
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Mar 4, 2016
Mar 1, 2016
Observations by third parties
Search/Exam
Feb 29, 2016
Observations by third parties
Search/Exam
Feb 19, 2016
Registration under Rule 23 EPC
Search/Exam
Feb 15, 2016
(Electronic) Receipt
Search/Exam
Feb 15, 2016
Annex
Search/Exam
Feb 15, 2016
Letter accompanying subsequently filed items
Search/Exam
Feb 15, 2016
Letter to the Legal Division
Search/Exam
Feb 15, 2016
Letter to the Legal Division
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Feb 2, 2016
(Electronic) Receipt
Search/Exam
Jan 5, 2016
(Electronic) Receipt
Search/Exam
Jan 5, 2016
Amended claims with annotations
Search/Exam
Jan 5, 2016
Amended description with annotations
Search/Exam
Jan 5, 2016
Claims
Search/Exam
Jan 5, 2016
Deficiencies as to Rule 23 EPC
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Jan 5, 2016
Description
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Jan 5, 2016
Letter accompanying subsequently filed items
Search/Exam
Jan 5, 2016
Jan 5, 2016
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Rule 23 - Annex A
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Jan 5, 2016
Rule 23 - Annex B
Search/Exam
Dec 18, 2015
(Electronic) Receipt
Search/Exam
Dec 18, 2015
Annex
Search/Exam
Dec 18, 2015
Letter accompanying subsequently filed items
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Dec 18, 2015
Letter to the Legal Division
Search/Exam
Dec 8, 2015
Dec 8, 2015
Dec 3, 2015
(Electronic) Receipt
Search/Exam
Dec 3, 2015
Letter accompanying subsequently filed items
Search/Exam
Dec 3, 2015
Dec 3, 2015
Nov 25, 2015
Aug 26, 2015
Annex to the communication
Search/Exam
Aug 26, 2015
Communication from the Examining Division
Search/Exam
Jun 10, 2015
Jun 9, 2015
Amended claims with annotations
Search/Exam
Jun 9, 2015
Amended claims with annotations
Search/Exam
Jun 9, 2015
Amended claims with annotations
Search/Exam
Jun 9, 2015
Claims
Search/Exam
Jun 9, 2015
Claims
Search/Exam
Jun 9, 2015
Claims
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Jun 9, 2015
May 28, 2015
Jan 28, 2015
Annex to the communication
Search/Exam
Jan 28, 2015
Communication from the Examining Division
Search/Exam
Dec 10, 2014
Amended claims with annotations
Search/Exam
Dec 10, 2014
Claims
Search/Exam
Dec 10, 2014
Oct 16, 2014
Oct 16, 2014
Oct 9, 2014
(Electronic) Receipt
Search/Exam
Oct 9, 2014
Letter accompanying subsequently filed items
Search/Exam
Oct 9, 2014
Observations by third parties
Search/Exam
Oct 9, 2014
Patent document filed by a Third party
Search/Exam
Oct 9, 2014
Patent document filed by a Third party
Search/Exam
Jun 16, 2014
Claims
Search/Exam
Jun 16, 2014
May 13, 2014
Submission concerning representation
Search/Exam
Feb 6, 2014
Annex to the communication
Search/Exam
Feb 6, 2014
Communication from the Examining Division
Search/Exam
May 31, 2013
Claims
Search/Exam
May 31, 2013
Jan 28, 2013
Annex to the communication
Search/Exam
Jan 28, 2013
Communication from the Examining Division
Search/Exam
Aug 22, 2012
Aug 22, 2012
Aug 22, 2012
Aug 22, 2012
Amendments received before examination
Search/Exam
Jun 25, 2012
Letter concerning fees and payments
Search/Exam
Mar 6, 2012
Refund of fees
Search/Exam
Feb 27, 2012
Jan 25, 2012
Notification of forthcoming publication
Search/Exam
Jan 20, 2012
Jan 20, 2012
European search opinion
Search/Exam
Jan 20, 2012
European search report
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Oct 10, 2011
Abstract
Search/Exam
Oct 10, 2011
Oct 10, 2011
Claims
Search/Exam
Oct 10, 2011
Description
Search/Exam
Oct 10, 2011
Designation of inventor
Search/Exam
Oct 10, 2011
Designation of inventor
Search/Exam
Oct 10, 2011
Letter concerning search matters
Search/Exam
Oct 10, 2011
Request for grant of a European patent
Search/Exam
Oct 15, 2009