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The patent EP3832737 was granted to Meyer Burger Germany on Sep 4, 2024. The application was filed on Jul 2, 2012 under application number EP21150107A. 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 |
|---|---|---|---|
| STRAWMAN | May 30, 2025 | HASELTINE LAKE KEMPNER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US5935344 |
| DESCRIPTION | WO2012059878 |
| EXAMINATION | JP2006222469 |
| OPPOSITION | EP0881694 |
| OPPOSITION | EP1881534 |
| OPPOSITION | EP2043161 |
| OPPOSITION | JP2001044461 |
| OPPOSITION | JP2002076397 |
| OPPOSITION | JP2004140087 |
| OPPOSITION | JP2004221437 |
| OPPOSITION | JP2004296550 |
| OPPOSITION | JP2005260149 |
| OPPOSITION | JP2006222469 |
| OPPOSITION | JP2008305945 |
| OPPOSITION | JP2009290234 |
| OPPOSITION | JP2010080885 |
| OPPOSITION | JP2011023758 |
| OPPOSITION | JP2011035092 |
| OPPOSITION | JP2011060971 |
| OPPOSITION | JP2011187906 |
| OPPOSITION | JPH11251609 |
| OPPOSITION | JPH11261086 |
| OPPOSITION | US2009151782 |
| OPPOSITION | US2012048371 |
| OPPOSITION | US2012145233 |
| OPPOSITION | US5935344 |
| OPPOSITION | WO0055923 |
| OPPOSITION | WO2010081460 |
| OPPOSITION | WO2010118479 |
| OPPOSITION | WO2010118688 |
| OPPOSITION | WO2011040489 |
| OTHER | EP2682990 |
| SEARCH | EP1555695 |
| SEARCH | EP1696492 |
| SEARCH | EP1881534 |
| SEARCH | JP2001044461 |
| SEARCH | JP2004228281 |
| SEARCH | WO2012059878 |
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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Oct 16, 2025
Brief communication
Search/Exam
Oct 16, 2025
Brief communication
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Oct 16, 2025
Oct 10, 2025
Oct 10, 2025
Oct 10, 2025
Oct 7, 2025
Annex
Search/Exam
Oct 7, 2025
Interruption of proceedings
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Sep 23, 2025
Sep 23, 2025
Annex
OPPO
Sep 23, 2025
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Sep 24, 2024
Registration under Rule 23 EPC
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Sep 17, 2024
Sep 10, 2024
(Electronic) Receipt
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Sep 10, 2024
Annex
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Sep 10, 2024
Letter accompanying subsequently filed items
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Sep 10, 2024
Letter to the Legal Division
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Aug 28, 2024
Annex
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Aug 13, 2024
Deficiencies as to Rule 23 EPC
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Aug 8, 2024
Decision to grant a European patent
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Aug 2, 2024
(Electronic) Receipt
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Aug 2, 2024
Letter accompanying subsequently filed items
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Aug 2, 2024
Letter to the Legal Division
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Jul 26, 2024
(Electronic) Receipt
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Jul 26, 2024
Letter accompanying subsequently filed items
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Jul 2, 2024
Deficiencies as to Rule 23 EPC
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Jun 18, 2024
Annex
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Jun 18, 2024
Letter to the Legal Division
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Jun 4, 2024
(Electronic) Receipt
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Jun 4, 2024
Filing of the translations of the claims
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Jun 4, 2024
French translation of claims
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Jun 4, 2024
German translation of the claims
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Mar 14, 2024
(Electronic) Receipt
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Mar 14, 2024
Letter concerning fees and payments
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Feb 7, 2024
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Intention to grant (signatures)
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Feb 7, 2024
Text intended for grant (clean copy)
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Feb 7, 2024
Nov 1, 2023
(Electronic) Receipt
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Nov 1, 2023
Amended claims with annotations
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Nov 1, 2023
Amended description with annotations
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Nov 1, 2023
Claims
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Nov 1, 2023
Description
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Nov 1, 2023
Letter accompanying subsequently filed items
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Nov 1, 2023
Sep 21, 2023
Sep 18, 2023
(Electronic) Receipt
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Sep 18, 2023
Letter accompanying subsequently filed items
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Sep 18, 2023
May 17, 2023
Annex to the communication
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May 17, 2023
Communication from the Examining Division
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Feb 16, 2023
Feb 14, 2023
(Electronic) Receipt
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Feb 14, 2023
(Electronic) Receipt
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Feb 14, 2023
Amended claims with annotations
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Feb 14, 2023
Amended claims with annotations
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Feb 14, 2023
Amended description with annotations
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Feb 14, 2023
Amended description with annotations
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Feb 14, 2023
Claims
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Feb 14, 2023
Claims
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Feb 14, 2023
Description
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Feb 14, 2023
Description
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Feb 14, 2023
Letter accompanying subsequently filed items
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Feb 14, 2023
Letter accompanying subsequently filed items
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Feb 14, 2023
Feb 14, 2023
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Feb 10, 2023
Oct 4, 2022
Annex to a communication
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Oct 4, 2022
Annex to the communication
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Oct 4, 2022
Communication from the Examining Division
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Sep 26, 2022
Examination started
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Jul 6, 2022
Jul 6, 2022
Jun 30, 2022
(Electronic) Receipt
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Jun 30, 2022
Letter accompanying subsequently filed items
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Jun 30, 2022
Observations by third parties
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Sep 17, 2021
(Electronic) Receipt
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Sep 17, 2021
Sep 17, 2021
Amended claims with annotations
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Sep 17, 2021
Amendments received before examination
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Sep 17, 2021
Letter accompanying subsequently filed items
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Jun 14, 2021
May 12, 2021
Notification of forthcoming publication
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Apr 22, 2021
Letter which had not been notified
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Apr 6, 2021
Letter which had not been notified
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Mar 12, 2021
Communication to designated inventor
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Mar 12, 2021
Communication to designated inventor
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Mar 10, 2021
Refund of fees
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Feb 16, 2021
(Electronic) Receipt
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Feb 16, 2021
Feb 16, 2021
European search opinion
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Feb 16, 2021
European search report
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Feb 16, 2021
Information on Search Strategy
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Feb 16, 2021
Letter concerning fees and payments
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Feb 8, 2021
Search started
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Jan 4, 2021
Abstract
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Jan 4, 2021
Jan 4, 2021
Claims
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Jan 4, 2021
Description
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Jan 4, 2021
Designation of inventor
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Jan 4, 2021
Drawings
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Jan 4, 2021