The patent EP3151948 was granted to Thyssenkrupp on Dec 21, 2022. The application was originally filed on Jun 1, 2015 under application number EP15729771A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP20010905656 |
| DESCRIPTION | DE102005022650 |
| DESCRIPTION | EP1370342 |
| DESCRIPTION | EP1497014 |
| DESCRIPTION | EP1515791 |
| DESCRIPTION | EP2286897 |
| DESCRIPTION | WO0151181 |
| DESCRIPTION | WO03078314 |
| DESCRIPTION | WO03084646 |
| DESCRIPTION | WO03105998 |
| INTERNATIONAL-SEARCH-REPORT | DE102012010017 |
| INTERNATIONAL-SEARCH-REPORT | EP1268040 |
| INTERNATIONAL-SEARCH-REPORT | EP1497014 |
| INTERNATIONAL-SEARCH-REPORT | EP2172627 |
| INTERNATIONAL-SEARCH-REPORT | EP2286897 |
| INTERNATIONAL-SEARCH-REPORT | US4869890 |
| INTERNATIONAL-SEARCH-REPORT | US6890501 |
| OPPOSITION | JP2013015027 |
| OPPOSITION | WO2013174475 |
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
| Citation Phase | Reference Text |
|---|---|
| DESCRIPTION | - G. ERTL; H. KNÖZINGER; J. WEITKAMP, Handbook of Heterogeneous Catalysis, VCH WEINHEIM, (1997), vol. 4, pages 1633 - 1668 |
| DESCRIPTION | - IWAKI ET AL., APPL. CATAL. A, (2010), vol. 390, pages 71 - 77 |
| DESCRIPTION | - KOEBEL ET AL., IND. ENG. CHEM. RES., (2001), vol. 40, pages 52 - 59 |
| INTERNATIONAL-SEARCH-REPORT | - "CLEANER NITRIC ACID PLANT TAIL GAS", NITROGEN, BRITISH SULPHUR CO, LONDON, GB, (19940101), no. 207, ISSN 0029-0777, pages 33/34,36 - 40, XP000423568 [A] 1-16 * page 34 - page 39; figure 1 * |
| OPPOSITION | - Groves Michael, Alexander Sasonow, "Uhde EnviNOx® technology for NOX and N2O abatement: a contribution to reducing emissions from nitric acid plants", Fifth International Symposium on Non-CO2 Greenhouse Gases (NCGG-5). June 30 to July 3, 2009, Wageningen, Netherlands, Wageningen, Netherlands, (20090601), Fifth International Symposium on Non-CO2 Greenhouse Gases (NCGG-5). June 30 to July 3, 2009 , URL: https://ucpcdn.thyssenkrupp.com/_legacy/UCPthyssenkruppBAIS/assets.files/download_1/nitrates/uhde_publications_pdf_en_15000012.pdf, (20240219), XP093132521 |
| OPPOSITION | - Thiemann Michael, Scheibler Erich, Wiegand Karl Wilhelm, "Nitric Acid, Nitrous Acid, and Nitrogen Oxides", Ullmann's Encyclopedia of Industrial Chemistry, Weinheim , Wiley-VCH , (20000615), pages 177 - 225, doi:10.1002/14356007.a17_293, ISBN 978-3-527-30673-2, XP093132519 |
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Date
Description
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Jul 28, 2025
Jul 23, 2025
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
May 26, 2025
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Notice of appeal
Appeal
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Decision to grant a European patent
Search/Exam
Nov 11, 2022
(Electronic) Receipt
Search/Exam
Nov 11, 2022
English translation of the claims
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Nov 11, 2022
French translation of claims
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Nov 11, 2022
Letter accompanying subsequently filed items
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Jul 19, 2022
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Intention to grant (signatures)
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Jul 19, 2022
Text intended for grant (clean copy)
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Jul 19, 2022
Feb 25, 2022
(Electronic) Receipt
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Feb 25, 2022
Amended claims with annotations
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Feb 25, 2022
Amended description with annotations
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Feb 25, 2022
Claims
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Feb 25, 2022
Description
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Feb 25, 2022
Letter accompanying subsequently filed items
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Feb 25, 2022
Oct 26, 2021
Annex to the communication
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Oct 26, 2021
Communication from the Examining Division
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Mar 10, 2021
Feb 24, 2021
(Electronic) Receipt
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Feb 24, 2021
Enquiry as to the processing of the file
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Feb 24, 2021
Letter accompanying subsequently filed items
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Oct 9, 2019
(Electronic) Receipt
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Oct 9, 2019
Amended claims with annotations
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Oct 9, 2019
Claims
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Oct 9, 2019
Letter accompanying subsequently filed items
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(Electronic) Receipt
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Jul 30, 2019
Letter accompanying subsequently filed items
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Jul 30, 2019
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Annex to the communication
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Apr 11, 2019
Communication from the Examining Division
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Feb 7, 2019
Examination started
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Nov 15, 2018
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Annexes in respect of a client data request
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Jul 17, 2018
Annexes in respect of a client data request
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Jul 17, 2018
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(Electronic) Receipt
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Aug 2, 2017
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Amended claims with annotations
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Aug 2, 2017
Amendments received before examination
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Aug 2, 2017
Letter accompanying subsequently filed items
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May 10, 2017
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Annexes in respect of a client data request
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Mar 22, 2017
Annexes in respect of a client data request
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Communication to designated inventor
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Dec 19, 2016
Dec 1, 2016
(Electronic) Receipt
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Dec 1, 2016
Priority search results
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Dec 1, 2016
Request for entry into the European phase
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Oct 14, 2016
Information on entry into European phase
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Jan 4, 2016
Dec 10, 2015
Copy of the international search report
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Dec 10, 2015
Published international application - A1
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Sep 24, 2015
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Jun 1, 2015
(Electronic) Receipt
PCTRO
Jun 1, 2015
Abstract
PCTRO
Jun 1, 2015
Claims
PCTRO
Jun 1, 2015
Description
PCTRO
Jun 1, 2015
Drawings
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