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The patent EP2291641 was granted to MAX Planck Gesellschaft ZUR Frderung DER Wissenschaften EV on Feb 17, 2021. The application was filed on May 20, 2009 under application number EP09749900A. 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 |
|---|---|---|---|
| CARL ZEISS | May 18, 2018 | PATENTANWALTE GEYER | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2004212799 |
| DESCRIPTION | US2006038993 |
| DESCRIPTION | WO2006127692 |
| INTERNATIONAL-SEARCH-REPORT | DE102006021317 |
| INTERNATIONAL-SEARCH-REPORT | US2006038993 |
| OPPOSITION | EP1903336 |
| OPPOSITION | US2008032414 |
| OPPOSITION | WO2006127692 |
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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Jan 21, 2021
Jan 21, 2021
Jan 15, 2021
Jan 4, 2021
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Oct 26, 2020
Oct 26, 2020
Oct 15, 2020
Aug 12, 2020
Refund of fees
Search/Exam
Aug 10, 2020
Aug 10, 2020
Jul 27, 2020
(Electronic) Receipt
Appeal
Jul 27, 2020
Jul 27, 2020
Jul 27, 2020
Withdrawal of an appeal
Appeal
Jun 10, 2020
Jun 10, 2020
May 29, 2020
(Electronic) Receipt
Appeal
May 29, 2020
May 29, 2020
Notice of appeal
Appeal
Mar 25, 2020
Mar 24, 2020
Mar 23, 2020
Mar 23, 2020
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Means of redress
OPPO
Mar 23, 2020
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Claims
OPPO
Sep 3, 2019
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Oct 19, 2018
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Claims
OPPO
Oct 15, 2018
Claims
OPPO
Oct 15, 2018
Claims
OPPO
Oct 15, 2018
Claims
OPPO
Oct 15, 2018
Claims
OPPO
Oct 15, 2018
Claims
OPPO
Oct 15, 2018
Claims
OPPO
Oct 15, 2018
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Aug 23, 2017
Jul 27, 2017
Decision to grant a European patent
Search/Exam
Jul 19, 2017
Jul 19, 2017
Jul 19, 2017
Intention to grant (signatures)
Search/Exam
Jul 19, 2017
Text intended for grant
Search/Exam
Jul 17, 2017
Jun 29, 2017
(Electronic) Receipt
Search/Exam
Jun 29, 2017
Amended claims with annotations
Search/Exam
Jun 29, 2017
Claims
Search/Exam
Jun 29, 2017
French translation of claims
Search/Exam
Jun 29, 2017
German translation of the claims
Search/Exam
Jun 29, 2017
Letter accompanying subsequently filed items
Search/Exam
Jun 29, 2017
May 12, 2017
Letter concerning fees and payments
Search/Exam
May 12, 2017
Payment of fees and costs
Search/Exam
Apr 25, 2017
Letter concerning fees and payments
Search/Exam
Apr 25, 2017
Payment of fees and costs
Search/Exam
Mar 24, 2017
Mar 24, 2017
Mar 24, 2017
Intention to grant (signatures)
Search/Exam
Mar 24, 2017
Text intended for grant
Search/Exam
Mar 14, 2017
Mar 1, 2017
(Electronic) Receipt
Search/Exam
Mar 1, 2017
Amended claims with annotations
Search/Exam
Mar 1, 2017
Claims
Search/Exam
Mar 1, 2017
Letter accompanying subsequently filed items
Search/Exam
Mar 1, 2017
Nov 9, 2016
Nov 9, 2016
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Intention to grant (signatures)
Search/Exam
Nov 9, 2016
Text intended for grant
Search/Exam
May 17, 2016
Payment of fees and costs
Search/Exam
May 17, 2016
Payment of fees and costs
Search/Exam
Feb 3, 2016
Jan 26, 2016
Jan 25, 2014
Dec 24, 2013
Submission concerning representation
Search/Exam
Dec 20, 2013
Submission concerning representation
Search/Exam
Sep 19, 2013
Annex to the communication
Search/Exam
Sep 19, 2013
Communication from the Examining Division
Search/Exam
Sep 12, 2013
Examination started
Search/Exam
Feb 19, 2013
Feb 13, 2013
Mar 1, 2011
CDS Clean up - amended applicant details
Search/Exam
Feb 14, 2011
Reply to Written Opinion prepared by the EPO
Search/Exam
Feb 9, 2011
Feb 3, 2011
Letter concerning the inventor
Search/Exam
Jan 27, 2011
Jan 17, 2011
Letter which had not been notified
Search/Exam
Jan 5, 2011
Jan 3, 2011
Refund order of filing/examination fee
Search/Exam
Dec 9, 2010
(Electronic) Receipt
Search/Exam
Dec 9, 2010
Request for entry into the European phase
Search/Exam
Dec 3, 2010
Oct 1, 2010
Information on entry into European phase
Search/Exam
Sep 9, 2010
Sep 9, 2010
Sep 9, 2010
Sep 9, 2010
Sep 9, 2010
Sep 9, 2010
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Aug 20, 2010
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Jan 27, 2010
Notification of election of EPO
Search/Exam
Dec 29, 2009
Dec 29, 2009
Dec 23, 2009
Annex
PCT2
Dec 23, 2009
Annex
PCT2
Dec 23, 2009
Annex
PCT2
Dec 23, 2009
Annex
PCT2
Dec 23, 2009
PCT demand form
PCT2
Dec 21, 2009
Annex
PCT2
Dec 21, 2009
Annex
PCT2
Dec 21, 2009
Annex
PCT2
Dec 21, 2009
Annex
PCT2
Dec 21, 2009
Dec 21, 2009
PCT demand form
PCT2
Dec 16, 2009
Dec 16, 2009
Nov 26, 2009
Copy of the international search report
Search/Exam
Nov 26, 2009
Published international application - A1
Search/Exam
Sep 3, 2009
Sep 3, 2009
Sep 3, 2009
May 20, 2009
(Electronic) Receipt
PCTRO
May 20, 2009
Abstract
PCTRO
May 20, 2009
Claims
PCTRO
May 20, 2009
Description
PCTRO
May 20, 2009
Drawings
PCTRO
May 20, 2009