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The patent EP3478286 was granted to Tesaro on Jan 3, 2024. The application was filed on Jun 29, 2017 under application number EP17821262A. The patent is currently recorded with a legal status of "Granted And Under Opposition".
Anti-PARP therapy to improve the prognosis of ovarian cancer. The therapy includes administering niraparib, a pharmaceutically acceptable salt thereof for use in treating cancer patients exhibiting an absence of a germline mutation in BRCA1 or BRCA2, or a reduction hazard ratio for disease progression or death as compared to control, a reduced hazard ratio for disease progression or death as compared to control, iii) prolonged overall survival as compared to control, or iv) an overall response rate of at least 30%.

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 |
|---|---|---|---|
| GENERICS UK | Oct 3, 2024 | RUSSELL | ADMISSIBLE |
| ALFRED E TIEFENBACHER | Oct 2, 2024 | HAMM & WITTKOPP | ADMISSIBLE |
| STADA ARZNEIMITTEL | Oct 2, 2024 | HAMM & WITTKOPP | ADMISSIBLE |
| STRAWMAN | Oct 2, 2024 | BRAND MURRAY FULLER | ADMISSIBLE |
| KRAUS & LEDERER PARTGMBB | Oct 1, 2024 | KRAUS & LEDERER PARTGMBB | ADMISSIBLE |
| TEVA PHARMACEUTICALS | Oct 1, 2024 | D YOUNG | ADMISSIBLE |
| SANDOZ | Sep 18, 2024 | ELKINGTON AND FIFE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2011US40953 |
| DESCRIPTION | WO2011US48427 |
| DESCRIPTION | WO2008084261 |
| DESCRIPTION | WO2009087381 |
| DESCRIPTION | WO2011160063 |
| DESCRIPTION | WO2012027224 |
| INTERNATIONAL-SEARCH-REPORT | US2009123419 |
| OPPOSITION | WO2008084261 |
| OPPOSITION | WO2014052550 |
| OPPOSITION | WO2015108986 |
| SEARCH | WO2014052550 |
| SEARCH | WO2015108986 |
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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Decision to grant a European patent
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Nov 29, 2023
(Electronic) Receipt
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Nov 29, 2023
Filing of the translations of the claims
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Nov 29, 2023
French translation of claims
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Nov 29, 2023
German translation of the claims
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Nov 29, 2023
Letter accompanying subsequently filed items
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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 description with annotations
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Aug 17, 2023
Description
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Letter accompanying subsequently filed items
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(Electronic) Receipt
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Jun 1, 2023
Letter accompanying subsequently filed items
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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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Mar 14, 2023
Letter accompanying subsequently filed items
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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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Nov 16, 2021
Amended claims with annotations
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Nov 16, 2021
Amended description with annotations
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Nov 16, 2021
Annex
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Annex
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Nov 16, 2021
Claims
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Nov 16, 2021
Description
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Nov 16, 2021
Letter accompanying subsequently filed items
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Document concerning representation
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(Electronic) Receipt
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Aug 9, 2021
Letter accompanying subsequently filed items
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Aug 9, 2021
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Annex to the communication
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May 6, 2021
Communication from the Examining Division
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(Electronic) Receipt
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May 5, 2021
Letter accompanying subsequently filed items
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May 5, 2021
Apr 29, 2021
Annexes in respect of a client data request
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Apr 29, 2021
Letter accompanying subsequently filed items
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Examination started
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Jul 2, 2020
(Electronic) Receipt
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Amended claims with annotations
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Jul 2, 2020
Amendments received before examination
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Letter accompanying subsequently filed items
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(Electronic) Receipt
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Mar 31, 2020
Letter accompanying subsequently filed items
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European search opinion
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Feb 14, 2020
Information on Search Strategy
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Feb 14, 2020
Supplementary European search report
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Feb 3, 2020
Search started
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Dec 12, 2019
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(Electronic) Receipt
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Nov 29, 2019
Letter accompanying subsequently filed items
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Nov 29, 2019
Matter concerning the application
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Aug 9, 2019
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Letter concerning fees and payments
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Matter concerning the application
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Communication to designated inventor
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Communication to designated inventor
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Amended claims with annotations
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Jan 25, 2019
Amendments received before examination
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Jan 25, 2019
Request for entry into the European phase
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Jan 25, 2019
Submission concerning representation
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Jan 17, 2019
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Information on entry into European phase
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Notification of the recording of a change
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Copy of the international search report
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Jan 4, 2018
Published international application - A1
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