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Production Of Glycoproteins With Low N-Glycolylneuraminic Acid (Neu5Gc) Content

Patent No. EP2501799 (titled "Production Of Glycoproteins With Low N-Glycolylneuraminic Acid (Neu5Gc) Content") was filed by LEK Pharmaceuticals DD on Nov 19, 2010. The application was issued on Jan 24, 2018.

Patent Summary

Patent Family

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
MAIWALD	Oct 24, 2018	MAIWALD

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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Aug 21, 2025
Annex to the communication - opposition
Aug 21, 2025
Brief communication - Opposition proceedings
Aug 21, 2025
Brief communication - Opposition proceedings
Aug 21, 2025
Communication inviting the parties to file observations
Aug 21, 2025
Communication inviting the parties to file observations
May 2, 2025
Brief communication - Opposition proceedings
Apr 30, 2025
(Electronic) Receipt
Apr 30, 2025
Letter accompanying subsequently filed items
Apr 30, 2025
Reply to an examination report in opposition proceedings
Mar 5, 2025
Brief communication - Opposition proceedings
Mar 5, 2025
Brief communication - Opposition proceedings
Mar 5, 2025
Communication inviting the parties to file observations
Mar 5, 2025
Communication inviting the parties to file observations
Feb 18, 2025
Brief communication - Opposition proceedings
Feb 13, 2025
(Electronic) Receipt
Feb 13, 2025
Amended description with annotations
Feb 13, 2025
Description
Feb 13, 2025
Letter accompanying subsequently filed items
Feb 13, 2025
Reply to an examination report in opposition proceedings
Nov 12, 2024
Brief communication - Opposition proceedings
Nov 12, 2024
Communication of amended entries concerning the representative
Nov 12, 2024
Miscellaneous requests concerning client data
Nov 5, 2024
(Electronic) Receipt
Nov 5, 2024
Brief communication - Opposition proceedings
Nov 5, 2024
Brief communication - Opposition proceedings
Nov 5, 2024
Letter accompanying subsequently filed items
Nov 5, 2024
Submission concerning change of proprietor's representative
Oct 17, 2024
Annex to the communication - opposition
Oct 17, 2024
Brief communication - Opposition proceedings
Oct 17, 2024
Brief communication - Opposition proceedings
Oct 17, 2024
Communication inviting the parties to file observations
Oct 17, 2024
Communication inviting the parties to file observations
Sep 12, 2024
Decision of the Board of Appeal
Sep 12, 2024
F3032 Notification(s) of the decision
Sep 12, 2024
F3032 Notification(s) of the decision
Jun 20, 2024
F3013 Oral Proceedings: Forwarding minutes
Jun 20, 2024
F3316 Oral Proceedings: Minutes (Appellant: Opponent)
May 16, 2024
F3345 Forwarding of submissions to parties
May 14, 2024
(Electronic) Receipt
May 14, 2024
F3345 Forwarding of submissions to parties
May 14, 2024
Letter dealing with oral proceedings during the appeal procedure
May 14, 2024
Request for interpreters during oral proceedings
May 8, 2024
(Electronic) Receipt
May 8, 2024
Letter accompanying subsequently filed items
May 8, 2024
Request for interpreters during oral proceedings
Apr 23, 2024
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Oct 12, 2023
F3345 Forwarding of submissions to parties
Oct 9, 2023
(Electronic) Receipt
Oct 9, 2023
Letter accompanying subsequently filed items
Oct 9, 2023
Letter dealing with oral proceedings during the appeal procedure
Jun 30, 2023
Advice of delivery
Jun 28, 2023
F3011.1 Oral Proceedings: summons
Jun 28, 2023
F3011.1 Oral Proceedings: summons
Jun 28, 2023
F3350 Communication regarding oral proceedings (art. 15 Rules of Procedure of the Boards of Appeal)
Jun 23, 2023
F3010 Oral proceedings: order for summons
Jun 23, 2023
F3303.16 Change of composition of the Board (T)
Dec 22, 2022
Communication of amended entries in the Register of European Patents
Dec 22, 2022
F3345 Forwarding of submissions to parties
Dec 19, 2022
Letter accompanying subsequently filed items
Dec 19, 2022
Request for change of opponent's representative
Oct 28, 2022
Communication of amended entries in the Register of European Patents
Oct 28, 2022
F3345 Forwarding of submissions to parties
Oct 21, 2022
Annexes in respect of a client data request
Oct 21, 2022
Letter accompanying subsequently filed items
Oct 21, 2022
Request concerning representative opponent
Jul 21, 2022
F3345 Forwarding of submissions to parties
Jul 19, 2022
(Electronic) Receipt
Jul 19, 2022
Amended claims with annotations
Jul 19, 2022
Amended claims with annotations
Jul 19, 2022
Amended claims with annotations
Jul 19, 2022
Amended claims with annotations
Jul 19, 2022
Amended claims with annotations
Jul 19, 2022
Amended claims with annotations
Jul 19, 2022
Auxiliary request during appeals procedure - 01
Jul 19, 2022
Auxiliary request during appeals procedure - 02
Jul 19, 2022
Auxiliary request during appeals procedure - 03
Jul 19, 2022
Auxiliary request during appeals procedure - 04
Jul 19, 2022
Auxiliary request during appeals procedure - 05
Jul 19, 2022
Auxiliary request during appeals procedure - 06
Jul 19, 2022
Letter accompanying subsequently filed items
Jul 19, 2022
Main request during appeals procedure
Jul 19, 2022
Non-Patent Literature cited during the appeal procedure
Jul 19, 2022
Non-Patent Literature cited during the appeal procedure
Jul 19, 2022
Non-Patent Literature cited during the appeal procedure
Jul 19, 2022
Non-Patent Literature cited during the appeal procedure
Jul 19, 2022
Patent Document cited during the appeal procedure
Jul 19, 2022
Patent Document cited during the appeal procedure
Jul 19, 2022
Patent Document cited during the appeal procedure
Jul 19, 2022
Reply to appeal
Mar 9, 2022
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Mar 4, 2022
(Electronic) Receipt
Mar 4, 2022
Annexes (other than cited documents) regarding appeal procedure
Mar 4, 2022
Annexes (other than cited documents) regarding appeal procedure
Mar 4, 2022
Annexes (other than cited documents) regarding appeal procedure
Mar 4, 2022
Composition of the board (T)
Mar 4, 2022
Letter accompanying subsequently filed items
Mar 4, 2022
Statement of grounds of appeal
Jan 11, 2022
F3204 Communication of the file number to the parties
Jan 11, 2022
F3204 Communication of the file number to the parties
Jan 3, 2022
(Electronic) Receipt
Jan 3, 2022
Letter accompanying subsequently filed items
Jan 3, 2022
Notice of appeal
Nov 10, 2021
Advice of delivery
Oct 29, 2021
Advice of delivery
Oct 28, 2021
Annex to the communication - opposition
Oct 28, 2021
Decision of the Opposition Division and instruction
Oct 28, 2021
Druckexemplar in opposition procedure
Oct 28, 2021
Grounds for the decision (Annex) - opposition
Oct 28, 2021
Interlocutory decision in opposition proceedings
Oct 28, 2021
Interlocutory decision in opposition proceedings
Oct 28, 2021
Means of redress
Oct 28, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Oct 28, 2021
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Oct 28, 2021
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Oct 28, 2021
Provision of a copy of the minutes - opposition procedure
Oct 28, 2021
Provision of a copy of the minutes - opposition procedure
Oct 28, 2021
Scanned annex to a communication - opposition procedure
Oct 28, 2021
Scanned annex to a communication - opposition procedure
Oct 28, 2021
Transmittal of decision / summons - opposition
Oct 28, 2021
Transmittal of decision / summons - opposition
Sep 23, 2021
Information about the result of oral proceedings
Sep 6, 2021
Notification concerning the date of oral proceedings
Aug 30, 2021
Brief communication - Opposition proceedings
Aug 24, 2021
Brief communication - Opposition proceedings
Aug 18, 2021
(Electronic) Receipt
Aug 18, 2021
Letter accompanying subsequently filed items
Aug 18, 2021
Written submission in preparation to/during oral proceedings
Jul 28, 2021
Brief communication - Opposition proceedings
Jul 28, 2021
Brief communication - Opposition proceedings
Jul 23, 2021
(Electronic) Receipt
Jul 23, 2021
(Electronic) Receipt
Jul 23, 2021
Auxiliary request during Opposition procedure
Jul 23, 2021
Auxiliary request during Opposition procedure
Jul 23, 2021
Auxiliary request during Opposition procedure - 04
Jul 23, 2021
Auxiliary request during Opposition procedure - 05
Jul 23, 2021
Citation in opposition procedure - 010
Jul 23, 2021
Citation in opposition procedure - 011
Jul 23, 2021
Citation in opposition procedure - 012
Jul 23, 2021
Citation in opposition procedure - 013
Jul 23, 2021
Citation in opposition procedure - 014
Jul 23, 2021
Consolidated list of cited opposition documents
Jul 23, 2021
Letter accompanying subsequently filed items
Jul 23, 2021
Letter accompanying subsequently filed items
Jul 23, 2021
Written submission in preparation to/during oral proceedings
Jul 23, 2021
Written submission in preparation to/during oral proceedings
Jun 24, 2021
Notification concerning the date of oral proceedings
Jun 24, 2021
Notification concerning the date of oral proceedings
Sep 28, 2020
Advice of delivery
Sep 25, 2020
Advice of delivery
Sep 23, 2020
Acknowledgement of a document
Sep 23, 2020
Acknowledgement of a document
Sep 23, 2020
Annex to the communication - opposition
Sep 23, 2020
Information concerning oral proceedings
Sep 23, 2020
Summons to attend oral proceedings
Sep 23, 2020
Summons to attend oral proceedings
Aug 14, 2020
(Electronic) Receipt
Aug 14, 2020
Letter accompanying subsequently filed items
Aug 14, 2020
Oral proceedings: reply to date proposed
Aug 12, 2020
Notification concerning the date of oral proceedings
Aug 12, 2020
Notification concerning the date of oral proceedings
Aug 7, 2020
Oral proceedings: reply to date proposed
Jul 23, 2020
Brief communication - Opposition proceedings
Jul 23, 2020
Brief communication - Opposition proceedings
Jul 17, 2020
(Electronic) Receipt
Jul 17, 2020
(Electronic) Receipt
Jul 17, 2020
Auxiliary request during Opposition procedure
Jul 17, 2020
Auxiliary request during Opposition procedure
Jul 17, 2020
Auxiliary request during Opposition procedure
Jul 17, 2020
Auxiliary request during Opposition procedure
Jul 17, 2020
Auxiliary request during Opposition procedure - 01
Jul 17, 2020
Auxiliary request during Opposition procedure - 02
Jul 17, 2020
Auxiliary request during Opposition procedure - 03
Jul 17, 2020
Auxiliary request during Opposition procedure - 04
Jul 17, 2020
Citation in opposition procedure - 009
Jul 17, 2020
Letter regarding the opposition procedure (no time limit)
Jul 17, 2020
Letter regarding the opposition procedure (no time limit)
Jul 17, 2020
Oral proceedings: reply to date proposed
Jul 17, 2020
Written submission in preparation to/during oral proceedings
Jul 17, 2020
Written submission in preparation to/during oral proceedings
Jul 10, 2020
Notification concerning the date of oral proceedings
Jul 10, 2020
Notification concerning the date of oral proceedings
Aug 22, 2019
Advice of delivery
Aug 20, 2019
Advice of delivery
Aug 19, 2019
Advice of delivery
Aug 19, 2019
Advice of delivery
Aug 16, 2019
Acknowledgement of a document
Aug 16, 2019
Acknowledgement of a document
Aug 16, 2019
Annex to the communication - opposition
Aug 16, 2019
Information concerning oral proceedings
Aug 16, 2019
Summons to attend oral proceedings
Aug 16, 2019
Summons to attend oral proceedings
Aug 5, 2019
Brief communication - Opposition proceedings
Jul 30, 2019
(Electronic) Receipt
Jul 30, 2019
Letter accompanying subsequently filed items
Jul 30, 2019
Reply from the opponent to submission of proprietor
May 13, 2019
Brief communication - Opposition proceedings
May 7, 2019
(Electronic) Receipt
May 7, 2019
Citation in opposition procedure - 008
May 7, 2019
Letter accompanying subsequently filed items
May 7, 2019
Reply of the patent proprietor to the notice(s) of opposition
Mar 1, 2019
Brief communication - Opposition proceedings
Mar 1, 2019
Grant of extension of time limit (opposition procedure)
Feb 19, 2019
(Electronic) Receipt
Feb 19, 2019
Letter accompanying subsequently filed items
Feb 19, 2019
Request for extension of time limit
Nov 6, 2018
Communication of a notice of opposition and request to file observations
Nov 6, 2018
Notice of further oppositions to opponent(s)
Oct 30, 2018
Communication of a notice of opposition - first information to patent proprietor
Oct 24, 2018
(Electronic) Receipt
Oct 24, 2018
Citation in opposition procedure - 001
Oct 24, 2018
Citation in opposition procedure - 002
Oct 24, 2018
Citation in opposition procedure - 003
Oct 24, 2018
Citation in opposition procedure - 004
Oct 24, 2018
Citation in opposition procedure - 005
Oct 24, 2018
Citation in opposition procedure - 006
Oct 24, 2018
Citation in opposition procedure - 007
Oct 24, 2018
Notice of opposition
Oct 24, 2018
Notice of opposition
Feb 2, 2018
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jan 5, 2018
Decision to grant a European patent
Dec 20, 2017
Brief communication to applicant/representative (Legal Division)
Dec 19, 2017
Communication to designated inventor
Dec 12, 2017
(Electronic) Receipt
Dec 12, 2017
Filing of the translations of the claims
Dec 12, 2017
French translation of claims
Dec 12, 2017
German translation of the claims
Dec 12, 2017
Letter accompanying subsequently filed items
Aug 22, 2017
Bibliographic data of the European patent application
Aug 22, 2017
Communication about intention to grant a European patent
Aug 22, 2017
Intention to grant (signatures)
Aug 22, 2017
Text intended for grant (clean copy)
Aug 22, 2017
Text intended for grant (version for approval)
Mar 30, 2017
(Electronic) Receipt
Mar 30, 2017
Amended description with annotations
Mar 30, 2017
Description
Mar 30, 2017
Letter accompanying subsequently filed items
Mar 30, 2017
Reply to communication from the Examining Division
Dec 2, 2016
Annex to the communication
Dec 2, 2016
Communication from the Examining Division
Nov 21, 2016
(Electronic) Receipt
Nov 21, 2016
Amended claims with annotations
Nov 21, 2016
Claims
Nov 21, 2016
Letter accompanying subsequently filed items
Nov 21, 2016
Reply to communication from the Examining Division
Jul 22, 2016
Annex to the communication
Jul 22, 2016
Communication from the Examining Division
Apr 6, 2016
(Electronic) Receipt
Apr 6, 2016
Letter accompanying subsequently filed items
Apr 6, 2016
Reply to communication from the Examining Division
Feb 2, 2016
Submission concerning representation
Jan 28, 2016
Annex to the communication
Jan 28, 2016
Communication from the Examining Division
May 27, 2015
(Electronic) Receipt
May 27, 2015
Amended claims with annotations
May 27, 2015
Claims
May 27, 2015
Letter accompanying subsequently filed items
May 27, 2015
Reply to communication from the Examining Division
Mar 20, 2015
Annex to the communication
Mar 20, 2015
Communication from the Examining Division
Nov 7, 2012
(Electronic) Receipt
Nov 7, 2012
Amended claims filed after receipt of (European) search report
Nov 7, 2012
Amendments received before examination
Nov 7, 2012
Letter accompanying subsequently filed items
Aug 29, 2012
Notification on forthcoming publication of bibliographic data
Jun 27, 2012
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Jun 5, 2012
Copy of the international preliminary report on patentability
May 31, 2012
(Electronic) Receipt
May 31, 2012
Request for entry into the European phase
Mar 30, 2012
Information on entry into European phase
Jun 15, 2011
Priority document (electronically transmitted)
May 26, 2011
Copy of the international search report
May 26, 2011
Published international application - A1
Jan 18, 2011
Written opinion of the ISA, boxes No. I to VIII
Jan 18, 2011
Written opinion of the ISA, cover sheet
Jan 18, 2011
Written opinion of the ISA, supplemental box
Nov 19, 2010
(Electronic) Receipt
Nov 19, 2010
Abstract
Nov 19, 2010
Claims
Nov 19, 2010
Description
Nov 19, 2010
Drawings
Nov 19, 2010
Priority document (RO-procedure)

EP2501799

LEK PHARMACEUTICALS DD

Application Number: EP10781888A
Filing Date: Nov 19, 2010
Status: Granted And Under Opposition; Dec 22, 2017
Publication Date: Jan 24, 2018
External Links: Slate, Register , Google Patents