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The patent EP3833335 was granted to Intas Pharmaceuticals on Aug 31, 2022. The application was filed on Jul 30, 2020 under application number EP20764155A. 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 |
|---|---|---|---|
| VIATRIS HEALTHCARE LDA | Jun 5, 2024 | ELKINGTON AND FIFE | INTERVENTION WITHDRAWN |
| ELKINGTON AND FIFE | May 30, 2023 | ELKINGTON AND FIFE | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0330532 |
| DESCRIPTION | EP0521471 |
| DESCRIPTION | EP1185274 |
| DESCRIPTION | EP1853249 |
| DESCRIPTION | EP2306982 |
| DESCRIPTION | GB1415295 |
| DESCRIPTION | US2011311625 |
| DESCRIPTION | US6277405 |
| DESCRIPTION | USRE37314E |
| DESCRIPTION | WO2005034908 |
| DESCRIPTION | WO2005034920 |
| DESCRIPTION | WO2008075320 |
| INTERNATIONAL-SEARCH-REPORT | WO2008075320 |
| OPPOSITION | EP0330532 |
| OPPOSITION | US2002009496 |
| OPPOSITION | US2005096391 |
| OPPOSITION | US4895726 |
| OPPOSITION | US6074670 |
| OPPOSITION | WO2008075320 |
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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Decision to grant a European patent
Search/Exam
Jul 25, 2022
(Electronic) Receipt
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Jul 25, 2022
Filing of the translations of the claims
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Jul 25, 2022
French translation of claims
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Jul 25, 2022
German translation of the claims
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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(Electronic) Receipt
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Amended claims with annotations
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Claims
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Dec 15, 2021
Letter accompanying subsequently filed items
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Aug 5, 2021
Annex to the communication
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Aug 5, 2021
Communication from the Examining Division
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Jul 30, 2021
Examination started
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Jun 9, 2021
(Electronic) Receipt
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Jun 9, 2021
Letter accompanying subsequently filed items
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Mar 16, 2021
Priority search results copy provided by EPO
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Mar 12, 2021
(Electronic) Receipt
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Amended claims with annotations
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Mar 12, 2021
Amendments received before examination
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Mar 12, 2021
Request for entry into the European phase
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Copy of the international search report
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Feb 4, 2021
Published international application - A1
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Oct 28, 2020
ISR: cited documents
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Abstract
PCTISA
Sep 1, 2020
Annex
PCTISA
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Annex
PCTISA
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Claims
PCTISA
Sep 1, 2020
Description
PCTISA
Sep 1, 2020
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