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The patent EP2661477 was granted to Ignite Energy Resources on Aug 3, 2022. The application was filed on Dec 15, 2011 under application number EP11855036A. 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 |
|---|---|---|---|
| STEEPER ENERGY APS | Mar 26, 2020 | CHRISTENSEN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2010034055 |
| INTERNATIONAL-SEARCH-REPORT | US2010186291 |
| INTERNATIONAL-SEARCH-REPORT | US7262331 |
| INTERNATIONAL-SEARCH-REPORT | WO2011123897 |
| INTERNATIONAL-SEARCH-REPORT | WO2012000033 |
| OPPOSITION | US2009064566 |
| OPPOSITION | US3642607 |
| OPPOSITION | US4021329 |
| OPPOSITION | US4266083 |
| SEARCH | EP1862527 |
| SEARCH | US2009064566 |
| SEARCH | US4045328 |
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.
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Description
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OPPO
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Description
OPPO
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Submission concerning representation
Search/Exam
Jul 8, 2019
May 31, 2019
May 24, 2019
May 16, 2019
(Electronic) Receipt
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May 16, 2019
Filing of the translations of the claims
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May 16, 2019
French translation of claims
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May 16, 2019
German translation of the claims
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May 16, 2019
Letter accompanying subsequently filed items
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Mar 11, 2019
Submission concerning representation
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Jan 16, 2019
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Intention to grant (signatures)
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Jan 16, 2019
Text intended for grant (clean copy)
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Jan 16, 2019
Dec 17, 2018
(Electronic) Receipt
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Dec 17, 2018
Amended description with annotations
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Dec 17, 2018
Description
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Dec 17, 2018
Letter accompanying subsequently filed items
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Dec 17, 2018
Aug 9, 2018
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Intention to grant (signatures)
Search/Exam
Aug 9, 2018
Text intended for grant (clean copy)
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Aug 9, 2018
Jul 3, 2018
Submission concerning representation
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Mar 22, 2018
(Electronic) Receipt
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Mar 22, 2018
Letter accompanying subsequently filed items
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Mar 22, 2018
Jan 10, 2018
Jan 4, 2018
(Electronic) Receipt
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Jan 4, 2018
Letter accompanying subsequently filed items
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Jan 4, 2018
Sep 13, 2017
Annex to the communication
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Sep 13, 2017
Communication from the Examining Division
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Sep 7, 2017
Examination started
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May 17, 2017
Registration under Rule 23 EPC
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Apr 24, 2017
Annex
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Apr 24, 2017
Letter to the Legal Division
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Apr 20, 2017
Letter to the Legal Division
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Feb 16, 2017
Deficiencies as to Rule 23 EPC
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Feb 16, 2017
Rule 23 - Annex B
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Feb 10, 2017
Letter to the Legal Division
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Jan 27, 2017
Letter to the Legal Division
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Nov 24, 2016
Deficiencies as to Rule 23 EPC
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Nov 24, 2016
Registration under Rule 23 EPC
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Nov 24, 2016
Rule 23 - Annex B
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Nov 9, 2016
(Electronic) Receipt
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Nov 9, 2016
Letter accompanying subsequently filed items
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Nov 9, 2016
Nov 8, 2016
Registration under Rule 23 EPC
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Oct 6, 2016
Oct 6, 2016
Letter to the Legal Division
Search/Exam
Sep 30, 2016
Decision to allow further processing
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Sep 16, 2016
Deficiencies as to Rule 23 EPC
Search/Exam
Sep 16, 2016
Rule 23 - Annex B
Search/Exam
Sep 15, 2016
Sep 15, 2016
Sep 13, 2016
(Electronic) Receipt
Search/Exam
Sep 13, 2016
Sep 13, 2016
Amended claims with annotations
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Sep 13, 2016
Letter accompanying subsequently filed items
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Sep 13, 2016
Request for further processing
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Sep 2, 2016
Annex
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Sep 2, 2016
Letter to the Legal Division
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Sep 2, 2016
Letter to the Legal Division
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Aug 31, 2016
Annexes in respect of a client data request
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Aug 31, 2016
Letter accompanying subsequently filed items
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Aug 31, 2016
Payment of fees and costs
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Aug 31, 2016
Payment of fees and costs
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Aug 31, 2016
Payment of fees and costs
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Aug 31, 2016
Payment of fees and costs
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Aug 31, 2016
Payment of fees and costs
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Aug 31, 2016
Payment of fees and costs
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Aug 31, 2016
Jul 13, 2016
Nov 24, 2015
Nov 6, 2015
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European search opinion
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Nov 6, 2015
Supplementary European search report
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Oct 27, 2015
Search started
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May 26, 2015
May 6, 2015
(Electronic) Receipt
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May 6, 2015
Letter accompanying subsequently filed items
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May 6, 2015
May 5, 2015
(Electronic) Receipt
Search/Exam
May 5, 2015
Annexes in respect of a client data request
Search/Exam
May 5, 2015
Letter accompanying subsequently filed items
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May 5, 2015
Oct 16, 2013
Aug 13, 2013
Aug 9, 2013
Communication to designated inventor
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Jul 29, 2013
Refund of fees
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Jul 24, 2013
Jun 26, 2013
(Electronic) Receipt
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Jun 26, 2013
Jun 26, 2013
Amended claims with annotations
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Jun 26, 2013
Amendments received before examination
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Jun 26, 2013
Request for entry into the European phase
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Jun 12, 2013
Notification of the recording of a change
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May 17, 2013
Information on entry into European phase
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Jul 31, 2012
Jul 12, 2012
Copy of the international search report
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Jul 12, 2012
Published international application - A1
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