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The patent EP3368631 was granted to Linde on Dec 18, 2019. The application was filed on Oct 20, 2016 under application number EP16798415A. 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.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| LAIR LIQUIDE | Sep 9, 2020 | DE CUENCA | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | DE102013005923 |
| INTERNATIONAL-SEARCH-REPORT | EP0342250 |
| INTERNATIONAL-SEARCH-REPORT | US5144806 |
| OPPOSITION | FR3000541 |
| OPPOSITION | JP3660748B |
| OPPOSITION | US3992167 |
| OPPOSITION | US4765813 |
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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Description
OPPO
Dec 4, 2025
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(Electronic) Receipt
Appeal
May 19, 2025
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(Electronic) Receipt
Appeal
Mar 11, 2025
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(Electronic) Receipt
Appeal
Apr 23, 2024
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Dec 14, 2023
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(Electronic) Receipt
Appeal
Nov 3, 2023
Nov 3, 2023
Reply to appeal
Appeal
Jul 4, 2023
Jun 26, 2023
(Electronic) Receipt
Appeal
Jun 26, 2023
Jun 26, 2023
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Apr 18, 2023
(Electronic) Receipt
Appeal
Apr 18, 2023
Apr 18, 2023
Notice of appeal
Appeal
Mar 6, 2023
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Means of redress
OPPO
Feb 28, 2023
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May 18, 2020
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Annexes in respect of a client data request
Search/Exam
May 12, 2020
Annexes in respect of a client data request
Search/Exam
May 12, 2020
Document concerning representation
Search/Exam
May 12, 2020
Jan 2, 2020
Nov 21, 2019
Decision to grant a European patent
Search/Exam
Nov 8, 2019
Filing of the translations of the claims
Search/Exam
Nov 8, 2019
French translation of claims
Search/Exam
Nov 8, 2019
German translation of the claims
Search/Exam
Nov 8, 2019
Letter concerning fees and payments
Search/Exam
Jul 17, 2019
Jul 11, 2019
Jul 2, 2019
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Intention to grant (signatures)
Search/Exam
Jul 2, 2019
Text intended for grant (clean copy)
Search/Exam
Jul 2, 2019
Jun 12, 2019
Examination started
Search/Exam
Nov 30, 2018
(Electronic) Receipt
Search/Exam
Nov 30, 2018
Nov 30, 2018
Amended claims with annotations
Search/Exam
Nov 30, 2018
Amendments received before examination
Search/Exam
Nov 30, 2018
Letter accompanying subsequently filed items
Search/Exam
Aug 8, 2018
Jun 6, 2018
Jun 4, 2018
Communication to designated inventor
Search/Exam
Jun 4, 2018
Communication to designated inventor
Search/Exam
Jun 4, 2018
Communication to designated inventor
Search/Exam
May 29, 2018
Priority search results copy provided by EPO
Search/Exam
May 16, 2018
May 3, 2018
(Electronic) Receipt
Search/Exam
May 3, 2018
Request for entry into the European phase
Search/Exam
Mar 9, 2018
Information on entry into European phase
Search/Exam
May 23, 2017
May 4, 2017
Copy of the international search report
Search/Exam
May 4, 2017
Published international application - A1
Search/Exam
Feb 1, 2017
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Feb 1, 2017
Nov 29, 2016
(Electronic) Receipt
PCTRO
Nov 29, 2016
Nov 29, 2016
Nov 29, 2016
Nov 29, 2016
Nov 4, 2016
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Oct 20, 2016
(Electronic) Receipt
PCTRO
Oct 20, 2016
Abstract
PCTRO
Oct 20, 2016
Claims
PCTRO
Oct 20, 2016
Description
PCTRO
Oct 20, 2016
Oct 20, 2016
Drawings
PCTRO
Oct 20, 2016
Oct 20, 2016