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Immunohistochemical Assay For Detecting Expression Of Programmed Death Ligand 1 (Pd-L1) In Tumor Tissue

Patent No. EP2981821 (titled "Immunohistochemical Assay For Detecting Expression Of Programmed Death Ligand 1 (Pd-L1) In Tumor Tissue") was filed by Merck Sharp & Dohme on Mar 31, 2014. The application was issued on Nov 3, 2021.

Patent Summary

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Patent Oppositions

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
FORSYTHE	Sep 19, 2019	J A KEMP

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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Sep 21, 2022
Refund of fees
Sep 14, 2022
Request for change of client data cannot be registered anymore
Sep 12, 2022
Submission concerning a transfer of rights (applicant)
Sep 12, 2022
Submission concerning a transfer of rights (applicant)
Sep 12, 2022
Submission concerning a transfer of rights (applicant)
Sep 12, 2022
Submission concerning a transfer of rights (applicant)
Aug 26, 2022
Indication of deficiencies in a request for registering a transfer of rights and invitation to correct them
Aug 18, 2022
Annexes in respect of a client data request
Aug 18, 2022
General authorisation
Aug 18, 2022
Letter concerning fees and payments
Aug 18, 2022
Submission concerning a transfer of rights (applicant)
Aug 18, 2022
Submission concerning a transfer of rights (applicant)
Oct 7, 2021
Decision to maintain the European patent in amended form
Oct 7, 2021
Decision to maintain the European patent in amended form
Oct 1, 2021
Termination of the opposition proceedings with maintenance of patent
Sep 30, 2021
Communication of amended entries
Sep 22, 2021
(Electronic) Receipt
Sep 22, 2021
Filing of the translation of the amended claims
Sep 22, 2021
French translation of claims
Sep 22, 2021
German translation of the claims
Sep 22, 2021
Letter accompanying subsequently filed items
Sep 20, 2021
Request concerning representative opponent
Jul 1, 2021
Communication of bibliographic data
Jul 1, 2021
Communication to opponent concerning maintenance
Jul 1, 2021
Communication with request to file translations
Jun 28, 2021
Maintenance of the patent with the documents specified in the final decision
May 15, 2021
(Electronic) Receipt
May 15, 2021
Advice of delivery
May 15, 2021
Letter accompanying subsequently filed items
May 7, 2021
Communication about missing advice of delivery
Mar 24, 2021
(Electronic) Receipt
Mar 24, 2021
Advice of delivery
Mar 24, 2021
Letter accompanying subsequently filed items
Mar 16, 2021
Annex to the communication - opposition
Mar 16, 2021
Decision of the Opposition Division and instruction
Mar 16, 2021
Druckexemplar in opposition procedure
Mar 16, 2021
Grounds for the decision (Annex) - opposition
Mar 16, 2021
Interlocutory decision in opposition proceedings
Mar 16, 2021
Internal form - Opposition/addressees
Mar 16, 2021
Internal form - Opposition/addressees
Mar 16, 2021
Means of redress
Mar 16, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Mar 16, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Mar 16, 2021
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Mar 16, 2021
Provision of a copy of the minutes - opposition procedure
Mar 16, 2021
Scanned annex to a communication - opposition procedure
Mar 16, 2021
Scanned annex to a communication - opposition procedure
Mar 16, 2021
Scanned annex to a communication - opposition procedure
Mar 16, 2021
Transmittal of decision / summons - opposition
Mar 16, 2021
Transmittal of decision / summons - opposition
Jan 29, 2021
Brief communication - Opposition proceedings
Jan 28, 2021
Information about the result of oral proceedings
Jan 26, 2021
(Electronic) Receipt
Jan 26, 2021
Amended description with annotations
Jan 26, 2021
Amended description with annotations
Jan 26, 2021
Auxiliary request during Opposition procedure
Jan 26, 2021
Auxiliary request during Opposition procedure - 02
Jan 26, 2021
Description
Jan 26, 2021
Description
Jan 26, 2021
Description
Jan 26, 2021
Letter accompanying subsequently filed items
Jan 26, 2021
Written submission in preparation to/during oral proceedings
Jan 13, 2021
Notification concerning the date of oral proceedings
Jan 13, 2021
Notification concerning the date of oral proceedings
Dec 15, 2020
Document concerning representation
Dec 10, 2020
Brief communication - Opposition proceedings
Dec 3, 2020
(Electronic) Receipt
Dec 3, 2020
Brief communication - Opposition proceedings
Dec 3, 2020
Letter accompanying subsequently filed items
Dec 3, 2020
Written submission in preparation to/during oral proceedings
Nov 27, 2020
(Electronic) Receipt
Nov 27, 2020
Auxiliary request during Opposition procedure
Nov 27, 2020
Auxiliary request during Opposition procedure - 01
Nov 27, 2020
Auxiliary request during Opposition procedure - 02
Nov 27, 2020
Auxiliary request during Opposition procedure - 03
Nov 27, 2020
Letter accompanying subsequently filed items
Nov 27, 2020
Notification concerning the date of oral proceedings
Nov 27, 2020
Notification concerning the date of oral proceedings
Nov 27, 2020
Written submission in preparation to/during oral proceedings
Jul 1, 2020
(Electronic) Receipt
Jul 1, 2020
Advice of delivery
Jul 1, 2020
Communication about missing advice of delivery
Jul 1, 2020
Letter accompanying subsequently filed items
May 20, 2020
(Electronic) Receipt
May 20, 2020
Advice of delivery
May 20, 2020
Letter accompanying subsequently filed items
May 13, 2020
Acknowledgement of a document
May 13, 2020
Annex to a communication
May 13, 2020
Annex to the communication - opposition
May 13, 2020
Information concerning oral proceedings
May 13, 2020
Information concerning oral proceedings
May 13, 2020
Summons to attend oral proceedings
May 13, 2020
Summons to attend oral proceedings
Feb 20, 2020
Brief communication - Opposition proceedings
Feb 14, 2020
(Electronic) Receipt
Feb 14, 2020
Any annexes (other than citation) to an opposition letter
Feb 14, 2020
Any annexes (other than citation) to an opposition letter
Feb 14, 2020
Any annexes (other than citation) to an opposition letter
Feb 14, 2020
Any annexes (other than citation) to an opposition letter
Feb 14, 2020
Auxiliary request during Opposition procedure
Feb 14, 2020
Auxiliary request during Opposition procedure
Feb 14, 2020
Auxiliary request during Opposition procedure
Feb 14, 2020
Auxiliary request during Opposition procedure
Feb 14, 2020
Auxiliary request during Opposition procedure - 01
Feb 14, 2020
Auxiliary request during Opposition procedure - 02
Feb 14, 2020
Auxiliary request during Opposition procedure - 03
Feb 14, 2020
Auxiliary request during Opposition procedure - 04
Feb 14, 2020
Letter accompanying subsequently filed items
Feb 14, 2020
Main request during Opposition procedure
Feb 14, 2020
Reply of the patent proprietor to the notice(s) of opposition
Oct 7, 2019
Communication of amended entries
Oct 4, 2019
Communication of a notice of opposition and request to file observations
Oct 4, 2019
Notice of further oppositions to opponent(s)
Sep 26, 2019
Communication of a notice of opposition - first information to patent proprietor
Sep 19, 2019
(Electronic) Receipt
Sep 19, 2019
Citation in opposition procedure - 001
Sep 19, 2019
Citation in opposition procedure - 002
Sep 19, 2019
Citation in opposition procedure - 003
Sep 19, 2019
Citation in opposition procedure - 004
Sep 19, 2019
Citation in opposition procedure - 005
Sep 19, 2019
Citation in opposition procedure - 006
Sep 19, 2019
Citation in opposition procedure - 008
Sep 19, 2019
Citation in opposition procedure - 009
Sep 19, 2019
Citation in opposition procedure - 010
Sep 19, 2019
Citation in opposition procedure - 011
Sep 19, 2019
Citation in opposition procedure - 012
Sep 19, 2019
Citation in opposition procedure - 013
Sep 19, 2019
Citation in opposition procedure - 014
Sep 19, 2019
Citation in opposition procedure - 015
Sep 19, 2019
Citation in opposition procedure - 016
Sep 19, 2019
Citation in opposition procedure - 017
Sep 19, 2019
Citation in opposition procedure - 018
Sep 19, 2019
Consolidated list of cited opposition documents
Sep 19, 2019
Notice of opposition
Sep 19, 2019
Notice of opposition
Sep 19, 2019
Request concerning representative opponent
Jan 3, 2019
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Nov 22, 2018
Decision to grant a European patent
Nov 6, 2018
(Electronic) Receipt
Nov 6, 2018
Filing of the translations of the claims
Nov 6, 2018
French translation of claims
Nov 6, 2018
German translation of the claims
Nov 6, 2018
Letter accompanying subsequently filed items
Jul 3, 2018
Bibliographic data of the European patent application
Jul 3, 2018
Communication about intention to grant a European patent
Jul 3, 2018
Intention to grant (signatures)
Jul 3, 2018
Text intended for grant (clean copy)
Jul 3, 2018
Text intended for grant (sequence listing)
Jul 3, 2018
Text intended for grant (version for approval)
Apr 27, 2018
(Electronic) Receipt
Apr 27, 2018
Amended claims with annotations
Apr 27, 2018
Amended description with annotations
Apr 27, 2018
Claims
Apr 27, 2018
Description
Apr 27, 2018
Letter accompanying subsequently filed items
Apr 27, 2018
Reply to communication from the Examining Division
Mar 2, 2018
Grant of extension of time limit (examination procedure)
Feb 23, 2018
(Electronic) Receipt
Feb 23, 2018
Letter accompanying subsequently filed items
Feb 23, 2018
Request for extension of time limit to communication from the Examining Division
Oct 18, 2017
Annex to the communication
Oct 18, 2017
Consultation by telephone/in person (with time limit)
Oct 18, 2017
Result of consultation by telephone/in person
Oct 6, 2017
Examination started
Apr 21, 2017
(Electronic) Receipt
Apr 21, 2017
Amended claims filed after receipt of (European) search report
Apr 21, 2017
Amended claims with annotations
Apr 21, 2017
Amendments received before examination
Apr 21, 2017
Letter accompanying subsequently filed items
Oct 11, 2016
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Sep 23, 2016
Communication regarding the transmission of the European search report
Sep 23, 2016
European search opinion
Sep 23, 2016
Information on Search Strategy
Sep 23, 2016
Supplementary European search report
Sep 8, 2016
Search started
Jan 19, 2016
Invitation to indicate correct address of inventor
Jan 13, 2016
Notification on forthcoming publication of bibliographic data
Jan 8, 2016
Letter which had not been notified
Nov 12, 2015
Communication regarding possible amendment of the application/payment of claims fee
Nov 10, 2015
Communication to designated inventor
Nov 10, 2015
Communication to designated inventor
Nov 10, 2015
Communication to designated inventor
Nov 10, 2015
Communication to designated inventor
Nov 10, 2015
Communication to designated inventor
Oct 20, 2015
Copy of the international preliminary report on patentability
Oct 7, 2015
(Electronic) Receipt
Oct 7, 2015
Converted Sequence Listing
Oct 7, 2015
Request for entry into the European phase
Aug 14, 2015
Information on entry into European phase
Oct 29, 2014
Priority document (electronically transmitted)
Oct 9, 2014
Converted Sequence Listing
Oct 9, 2014
Copy of the international search report
Oct 9, 2014
Published international application - A1

EP2981821

MERCK SHARP & DOHME

Application Number: EP14778739A
Filing Date: Mar 31, 2014
Status: Patent Maintained As Amended; Oct 1, 2021
Publication Date: Nov 3, 2021
External Links: Slate, Register , Google Patents