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The patent EP2768815 was granted to AL Ahmadi on Dec 29, 2021. The application was filed on Oct 17, 2012 under application number EP12841718A. 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 |
|---|---|---|---|
| SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ | Sep 11, 2019 | SHELL LEGAL SERVICES | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0352850 |
| DESCRIPTION | GB1055147 |
| DESCRIPTION | US2007037991 |
| DESCRIPTION | US2279469 |
| DESCRIPTION | US3563914 |
| DESCRIPTION | US3702259 |
| DESCRIPTION | US4761394 |
| DESCRIPTION | US4766105 |
| DESCRIPTION | US4908343 |
| DESCRIPTION | US5011807 |
| DESCRIPTION | US5057481 |
| DESCRIPTION | US5099041 |
| DESCRIPTION | US5102848 |
| DESCRIPTION | US5187140 |
| DESCRIPTION | US5407888 |
| DESCRIPTION | US7615655 |
| DESCRIPTION | US7657331 |
| DESCRIPTION | US7657332 |
| INTERNATIONAL-SEARCH-REPORT | EP0352850 |
| INTERNATIONAL-SEARCH-REPORT | RU2294327 |
| INTERNATIONAL-SEARCH-REPORT | RU2296126 |
| INTERNATIONAL-SEARCH-REPORT | US2010267972 |
| INTERNATIONAL-SEARCH-REPORT | US2010267974 |
| INTERNATIONAL-SEARCH-REPORT | US2010267975 |
| OPPOSITION | US4761394 |
| OPPOSITION | US4766105 |
| SEARCH | EP0352850 |
| SEARCH | US2010267973 |
| SEARCH | US2010267974 |
| SEARCH | US2010267975 |
| SEARCH | US2011152549 |
| SEARCH | WO03044002 |
| SEARCH | WO2004002972 |
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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Document concerning representation
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Letter accompanying subsequently filed items
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Decision to grant a European patent
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Oct 31, 2018
(Electronic) Receipt
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Oct 31, 2018
Filing of the translations of the claims
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Oct 31, 2018
French translation of claims
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Oct 31, 2018
German translation of the claims
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Jul 11, 2018
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Intention to grant (signatures)
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Jul 11, 2018
Text intended for grant (clean copy)
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(Electronic) Receipt
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Jun 15, 2018
Amended description with annotations
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Description
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Jun 15, 2018
Letter accompanying subsequently filed items
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(Electronic) Receipt
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May 17, 2018
Amended claims with annotations
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Amended claims with annotations
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Amended claims with annotations
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May 17, 2018
Claims
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May 17, 2018
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May 17, 2018
Claims
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May 17, 2018
Letter accompanying subsequently filed items
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Advice of delivery
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Feb 23, 2018
Acknowledgement of a document
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Feb 23, 2018
Annex to the communication
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Feb 23, 2018
Summons to attend oral proceedings
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Feb 14, 2018
Preparation for oral proceedings
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Feb 7, 2018
Extension of time limit granted
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Jan 31, 2018
(Electronic) Receipt
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Jan 31, 2018
Citation for the examination procedure
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Jan 31, 2018
Letter accompanying subsequently filed items
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Annexes in respect of a client data request
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Nov 21, 2017
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(Electronic) Receipt
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(Electronic) Receipt
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Nov 1, 2017
Amended claims with annotations
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Nov 1, 2017
Annexes in respect of a client data request
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Nov 1, 2017
Claims
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Nov 1, 2017
Letter accompanying subsequently filed items
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Nov 1, 2017
Letter accompanying subsequently filed items
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Nov 1, 2017
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Annex to the communication
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Jul 31, 2017
Communication from the Examining Division
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Jul 17, 2017
Examination started
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Nov 12, 2015
(Electronic) Receipt
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Nov 12, 2015
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Amended claims with annotations
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Nov 12, 2015
Amendments received before examination
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Nov 12, 2015
Letter accompanying subsequently filed items
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May 12, 2015
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European search opinion
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Apr 23, 2015
Supplementary European search report
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Apr 7, 2015
Search started
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(Electronic) Receipt
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Request for entry into the European phase
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Feb 28, 2014
Information on entry into European phase
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May 16, 2013
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Copy of the international search report
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Apr 25, 2013
Apr 25, 2013
Published international application - A1
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