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The patent EP2773433 was granted to Letow on Apr 20, 2022. The application was filed on Nov 1, 2012 under application number EP12788483A. 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 |
|---|---|---|---|
| DUTSCHKE | Jan 2, 2020 | RAUSCHENBACH | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE9405749U |
| INTERNATIONAL-SEARCH-REPORT | US2008096742 |
| INTERNATIONAL-SEARCH-REPORT | US6113522 |
| INTERNATIONAL-SEARCH-REPORT | WO0114017 |
| OPPOSITION | AT506525B |
| OPPOSITION | DE102007044725 |
| OPPOSITION | DE19915003 |
| OPPOSITION | DE20207978U |
| OPPOSITION | DE20307082U |
| OPPOSITION | DE20311030U |
| OPPOSITION | US2008096742 |
| OPPOSITION | US7867149 |
| OPPOSITION | WO0114017 |
| OPPOSITION | WO2006132891 |
| OPPOSITION | WO2008001173 |
| OPPOSITION | WO2010118229 |
| OTHER | AT506525B |
| OTHER | DE102007044725 |
| OTHER | DE19915003 |
| OTHER | DE20207978U |
| OTHER | US2008096742 |
| OTHER | US7867149 |
| OTHER | WO0114017 |
| OTHER | WO2010118229 |
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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OPPO
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Apr 8, 2019
Feb 28, 2019
Decision to grant a European patent
Search/Exam
Feb 14, 2019
(Electronic) Receipt
Search/Exam
Feb 14, 2019
Filing of the translations of the claims
Search/Exam
Feb 14, 2019
Feb 14, 2019
Letter accompanying subsequently filed items
Search/Exam
Feb 13, 2019
(Electronic) Receipt
Search/Exam
Feb 13, 2019
English translation of the claims
Search/Exam
Feb 13, 2019
Filing of the translations of the claims
Search/Exam
Feb 13, 2019
French translation of claims
Search/Exam
Jan 30, 2019
Jan 30, 2019
Jan 18, 2019
Non-scannable object
Search/Exam
Jan 18, 2019
Non-scannable object
Search/Exam
Jan 18, 2019
Observations by third parties
Search/Exam
Jan 18, 2019
Patent document filed by a Third party
Search/Exam
Dec 19, 2018
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Intention to grant (signatures)
Search/Exam
Dec 19, 2018
Text intended for grant (clean copy)
Search/Exam
Dec 19, 2018
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Advice of delivery
Search/Exam
Nov 16, 2018
Advice of delivery
Search/Exam
Nov 16, 2018
Nov 16, 2018
Nov 15, 2018
Nov 15, 2018
Nov 1, 2018
(Electronic) Receipt
Search/Exam
Nov 1, 2018
Citation filed by a third party
Search/Exam
Nov 1, 2018
Citation filed by a third party
Search/Exam
Nov 1, 2018
Letter accompanying subsequently filed items
Search/Exam
Nov 1, 2018
Observations by third parties
Search/Exam
Oct 18, 2018
(Electronic) Receipt
Search/Exam
Oct 18, 2018
Amended claims with annotations
Search/Exam
Oct 18, 2018
Amended description with annotations
Search/Exam
Oct 18, 2018
Claims
Search/Exam
Oct 18, 2018
Description
Search/Exam
Oct 18, 2018
Letter accompanying subsequently filed items
Search/Exam
Oct 18, 2018
May 23, 2018
Advice of delivery
Search/Exam
May 22, 2018
Advice of delivery
Search/Exam
May 16, 2018
Acknowledgement of a document
Search/Exam
May 16, 2018
Annex to the communication
Search/Exam
May 16, 2018
Preparation for oral proceedings
Search/Exam
May 16, 2018
Summons to attend oral proceedings
Search/Exam
Jan 29, 2018
(Electronic) Receipt
Search/Exam
Jan 29, 2018
Amended claims with annotations
Search/Exam
Jan 29, 2018
Claims
Search/Exam
Jan 29, 2018
Letter accompanying subsequently filed items
Search/Exam
Jan 29, 2018
Sep 26, 2017
Sep 25, 2017
Annex to the communication
Search/Exam
Sep 25, 2017
Communication from the Examining Division
Search/Exam
Sep 25, 2017
Jul 21, 2017
Jul 21, 2017
Jul 17, 2017
(Electronic) Receipt
Search/Exam
Jul 17, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 17, 2017
Observations by third parties
Search/Exam
Jul 17, 2017
Patent document filed by a Third party
Search/Exam
Jul 17, 2017
Patent document filed by a Third party
Search/Exam
Jul 17, 2017
Patent document filed by a Third party
Search/Exam
Jul 17, 2017
Patent document filed by a Third party
Search/Exam
Jul 17, 2017
Patent document filed by a Third party
Search/Exam
Jul 17, 2017
Patent document filed by a Third party
Search/Exam
Jun 19, 2017
(Electronic) Receipt
Search/Exam
Jun 19, 2017
Amended claims with annotations
Search/Exam
Jun 19, 2017
Claims
Search/Exam
Jun 19, 2017
Letter accompanying subsequently filed items
Search/Exam
Jun 19, 2017
Mar 27, 2017
Communication from the Examining Division
Search/Exam
Mar 27, 2017
Mar 16, 2017
Examination started
Search/Exam
Mar 13, 2017
(Electronic) Receipt
Search/Exam
Mar 13, 2017
Enquiry as to the processing of the file
Search/Exam
Mar 13, 2017
Letter accompanying subsequently filed items
Search/Exam
Mar 6, 2017
Deficiencies in an enquiry
Search/Exam
Feb 22, 2017
Mar 11, 2015
Priority search results
Search/Exam
Mar 11, 2015
Mar 5, 2015
Dec 12, 2014
Dec 12, 2014
Amended claims with annotations
Search/Exam
Dec 12, 2014
Amendments received before examination
Search/Exam
Sep 5, 2014
Submission concerning representation
Search/Exam
Aug 13, 2014
Jul 17, 2014
May 22, 2014
(Electronic) Receipt
Search/Exam
May 22, 2014
Priority search results
Search/Exam
May 22, 2014
Request for entry into the European phase
Search/Exam
May 20, 2014
Mar 14, 2014
Information on entry into European phase
Search/Exam
May 30, 2013
May 30, 2013
May 30, 2013
May 10, 2013
Copy of the international search report
Search/Exam
May 10, 2013
Copy of the international search report
Search/Exam
May 10, 2013
Published international application - A1
Search/Exam
Feb 26, 2013
Feb 26, 2013
Feb 26, 2013
Nov 1, 2012
(Electronic) Receipt
PCTRO
Nov 1, 2012
Abstract
PCTRO
Nov 1, 2012
Claims
PCTRO
Nov 1, 2012
Description
PCTRO
Nov 1, 2012
Drawings
PCTRO