Crystalline Forms Of Lesinurad And Its Sodium Salt

Patent No. EP3071554 (titled "Crystalline Forms Of Lesinurad And Its Sodium Salt") was filed by Crystal Pharmatech on Nov 20, 2014. The application was issued on Oct 3, 2018.

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
HGF	Jul 1, 2019	HGF

Dossier Documents

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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Jul 31, 2020
Communication to the parties concerning termination of the opposition proceedings - opposition rejected - no appeal lodged
Jul 31, 2020
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Jul 28, 2020
Termination of the opposition proceedings with maintenance of patent
Jul 27, 2020
(Electronic) Receipt
Jul 27, 2020
Advice of delivery
Jul 9, 2020
Communication about missing advice of delivery
May 29, 2020
Request for change of opponent's representative
May 26, 2020
Communication about missing advice of delivery
Apr 21, 2020
Advice of delivery
Apr 9, 2020
Acknowledgement of a document
Apr 9, 2020
Acknowledgement of a document
Apr 9, 2020
Decision of the Opposition Division and instruction
Apr 9, 2020
Decision rejecting the opposition
Apr 9, 2020
Grounds for the decision (Annex) - opposition
Apr 9, 2020
Internal form - Opposition/addressees
Apr 9, 2020
Means of redress
Apr 7, 2020
Notification concerning the date of oral proceedings
Apr 7, 2020
Notification concerning the date of oral proceedings
Apr 1, 2020
Brief communication - Opposition proceedings
Mar 31, 2020
Advice of delivery
Mar 26, 2020
(Electronic) Receipt
Mar 26, 2020
Letter accompanying subsequently filed items
Mar 26, 2020
Written submission in preparation to/during oral proceedings
Mar 25, 2020
Notification concerning the date of oral proceedings
Mar 25, 2020
Notification concerning the date of oral proceedings
Mar 24, 2020
Brief communication - Opposition proceedings
Mar 19, 2020
Written submission in preparation to/during oral proceedings
Dec 23, 2019
Advice of delivery
Dec 20, 2019
Advice of delivery
Dec 18, 2019
Acknowledgement of a document
Dec 18, 2019
Acknowledgement of a document
Dec 18, 2019
Annex to the communication - opposition
Dec 18, 2019
Information concerning oral proceedings
Dec 18, 2019
Summons to attend oral proceedings
Dec 18, 2019
Summons to attend oral proceedings
Nov 21, 2019
Brief communication - Opposition proceedings
Nov 15, 2019
(Electronic) Receipt
Nov 15, 2019
Amended claims with annotations
Nov 15, 2019
Amended claims with annotations
Nov 15, 2019
Claims
Nov 15, 2019
Claims
Nov 15, 2019
Letter accompanying subsequently filed items
Nov 15, 2019
Reply of the patent proprietor to the notice(s) of opposition
Jul 15, 2019
Communication of a notice of opposition and request to file observations
Jul 15, 2019
Notice of further oppositions to opponent(s)
Jul 11, 2019
Communication of a notice of opposition - first information to patent proprietor
Jul 1, 2019
(Electronic) Receipt
Jul 1, 2019
Citation in opposition procedure - 001
Jul 1, 2019
Citation in opposition procedure - 002
Jul 1, 2019
Citation in opposition procedure - 003
Jul 1, 2019
Citation in opposition procedure - 004
Jul 1, 2019
Citation in opposition procedure - 005
Jul 1, 2019
Citation in opposition procedure - 006
Jul 1, 2019
Citation in opposition procedure - 007
Jul 1, 2019
Consolidated list of cited opposition documents
Jul 1, 2019
Notice of opposition
Jul 1, 2019
Notice of opposition
Oct 15, 2018
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Sep 6, 2018
Decision to grant a European patent
Aug 28, 2018
Bibliographic data of the European patent application
Aug 28, 2018
Information about intention to grant a patent
Aug 28, 2018
Intention to grant (signatures)
Aug 28, 2018
Text intended for grant (clean copy)
Aug 28, 2018
Text intended for grant (version for approval)
Aug 8, 2018
(Electronic) Receipt
Aug 8, 2018
Amended description with annotations
Aug 8, 2018
Description
Aug 8, 2018
French translation of claims
Aug 8, 2018
German translation of the claims
Aug 8, 2018
Letter accompanying subsequently filed items
Aug 8, 2018
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
May 11, 2018
Bibliographic data of the European patent application
May 11, 2018
Communication about intention to grant a European patent
May 11, 2018
Intention to grant (signatures)
May 11, 2018
Text intended for grant (clean copy)
May 11, 2018
Text intended for grant (version for approval)
Apr 3, 2018
Examination started
Nov 15, 2017
(Electronic) Receipt
Nov 15, 2017
Letter accompanying subsequently filed items
Nov 15, 2017
Reply to invitation to file a copy of priority search results
Nov 3, 2017
Invitation to file a copy of search results(priority)
Oct 24, 2017
(Electronic) Receipt
Oct 24, 2017
Amended claims filed after receipt of (European) search report
Oct 24, 2017
Amended claims with annotations
Oct 24, 2017
Amended description filed after receipt of (European) search report
Oct 24, 2017
Amended description with annotations
Oct 24, 2017
Amended drawings filed after receipt of (European) search report
Oct 24, 2017
Amended drawings with annotations
Oct 24, 2017
Amendments received before examination
Oct 24, 2017
Letter accompanying subsequently filed items
Oct 24, 2017
Translation of priority document
Oct 24, 2017
Translation of priority document
May 16, 2017
Invitation to indicate correct address of inventor
May 10, 2017
Letter which had not been notified
Apr 25, 2017
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Apr 25, 2017
Invitation to file a translation of the previous application
Apr 6, 2017
Communication regarding the transmission of the European search report
Apr 6, 2017
European search opinion
Apr 6, 2017
Information on Search Strategy
Apr 6, 2017
Supplementary European search report
Mar 29, 2017
Search started
Jan 18, 2017
(Electronic) Receipt
Jan 18, 2017
Amended claims filed after receipt of (European) search report
Jan 18, 2017
Amended claims with annotations
Jan 18, 2017
Amendments received before examination
Jan 18, 2017
Letter accompanying subsequently filed items
Aug 31, 2016
Notification on forthcoming publication of bibliographic data
Jul 22, 2016
Communication regarding possible amendment of the application/payment of claims fee
Jun 29, 2016
Communication to designated inventor
Jun 29, 2016
Communication to designated inventor
Jun 29, 2016
Communication to designated inventor
Jun 29, 2016
Communication to designated inventor
Jun 29, 2016
Communication to designated inventor
Jun 29, 2016
Communication to designated inventor
Jun 21, 2016
(Electronic) Receipt
Jun 21, 2016
Request for entry into the European phase
Jun 7, 2016
Copy of the international preliminary report on patentability
Apr 1, 2016
Information on entry into European phase
Sep 11, 2015
Copy of the international search report
Sep 11, 2015
International publication of the international search report
Jun 15, 2015
Priority document (electronically transmitted)
Jun 15, 2015
Priority document (electronically transmitted)
Jun 15, 2015
Priority document (electronically transmitted)
Jun 15, 2015
Priority document (electronically transmitted)
May 28, 2015
Published international application - A2

EP3071554

CRYSTAL PHARMATECH

Application Number: EP14863925A
Filing Date: Nov 20, 2014
Status: Opposition Rejected; Jul 31, 2020
Publication Date: Oct 3, 2018
External Links: Slate, Register , Google Patents

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Crystalline Forms Of Lesinurad And Its Sodium Salt

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Dossier Documents

EP3071554