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Size-Based Analysis Of Fetal Dna Fraction In Maternal Plasma

Patent No. EP2823062 (titled "Size-Based Analysis Of Fetal Dna Fraction In Maternal Plasma") was filed by The Chinese University OF Hong Kong on Mar 8, 2013. The application was issued on Jan 3, 2018.

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
JAMES POOLE	Oct 4, 2018	CARPMAELS & RANSFORD

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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Nov 13, 2025
Decision to maintain the European patent in amended form
Nov 13, 2025
Decision to maintain the European patent in amended form
Jun 18, 2025
(Electronic) Receipt
Jun 18, 2025
Filing of the translation of the amended claims
Jun 18, 2025
French translation of claims
Jun 18, 2025
German translation of the claims
Jun 18, 2025
Letter accompanying subsequently filed items
Jun 3, 2025
Communication of bibliographic data
Jun 3, 2025
Communication to opponent concerning maintenance
Jun 3, 2025
Communication with request to file translations
Jun 2, 2025
Maintenance of the patent with the documents specified in the final decision
Feb 27, 2025
Brief communication - Opposition proceedings
Feb 27, 2025
Brief communication - Opposition proceedings
Feb 27, 2025
Decision of the Opposition Division and instruction
Feb 27, 2025
Druckexemplar in opposition procedure
Feb 27, 2025
Grounds for the decision (Annex) - opposition
Feb 27, 2025
Interlocutory decision in opposition proceedings
Feb 27, 2025
Interlocutory decision in opposition proceedings
Feb 27, 2025
Means of redress
Sep 12, 2024
Annex to the communication - opposition
Sep 12, 2024
Brief communication - Opposition proceedings
Sep 12, 2024
Brief communication - Opposition proceedings
Sep 12, 2024
Communication inviting the parties to file observations
Sep 12, 2024
Communication inviting the parties to file observations
Aug 5, 2024
Brief communication - Opposition proceedings
Jul 30, 2024
(Electronic) Receipt
Jul 30, 2024
Amended description with annotations
Jul 30, 2024
Description
Jul 30, 2024
Letter accompanying subsequently filed items
Jul 30, 2024
Reply to an examination report in opposition proceedings
Jun 28, 2024
Annex to the communication - opposition
Jun 28, 2024
Brief communication - Opposition proceedings
Jun 28, 2024
Brief communication - Opposition proceedings
Jun 28, 2024
Communication inviting the parties to file observations
Jun 28, 2024
Communication inviting the parties to file observations
Jan 26, 2024
Annex to the communication - opposition
Jan 26, 2024
Communication inviting the parties to file observations
Jan 26, 2024
Communication inviting the parties to file observations
Dec 18, 2023
Decision of the Board of Appeal
Dec 18, 2023
F3032 Notification(s) of the decision
Dec 18, 2023
F3032 Notification(s) of the decision
Jun 30, 2023
F3013 Oral Proceedings: Forwarding minutes
Jun 30, 2023
F3013 Oral Proceedings: Forwarding minutes
Jun 30, 2023
F3315 Oral Proceedings: Minutes (Appellant : Proprietor)
Jun 26, 2023
F3345 Forwarding of submissions to parties
Jun 23, 2023
(Electronic) Receipt
Jun 23, 2023
Letter accompanying subsequently filed items
Jun 23, 2023
Withdrawal of a request for oral proceedings
Jun 2, 2023
F3004 Communication of the Registry
Jun 2, 2023
F3004 Communication of the Registry
Jun 1, 2023
F3345 Forwarding of submissions to parties
May 26, 2023
(Electronic) Receipt
May 26, 2023
Letter accompanying subsequently filed items
May 26, 2023
Letter dealing with oral proceedings during the appeal procedure
May 26, 2023
Oral proceedings: change of venue
May 26, 2023
Oral proceedings: change of venue
May 11, 2023
F3345 Forwarding of submissions to parties
May 8, 2023
(Electronic) Receipt
May 8, 2023
Letter accompanying subsequently filed items
May 8, 2023
Letter dealing with oral proceedings during the appeal procedure
May 3, 2023
F3345 Forwarding of submissions to parties
May 2, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
May 2, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Apr 27, 2023
(Electronic) Receipt
Apr 27, 2023
Letter accompanying subsequently filed items
Apr 27, 2023
Request for interpreters during oral proceedings
Mar 22, 2023
F3004 Communication of the Registry
Mar 22, 2023
F3004 Communication of the Registry
Mar 14, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Mar 14, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Mar 13, 2023
F3345 Forwarding of submissions to parties
Mar 8, 2023
(Electronic) Receipt
Mar 8, 2023
Letter accompanying subsequently filed items
Mar 8, 2023
Letter dealing with oral proceedings during the appeal procedure
Sep 13, 2022
F3011.1 Oral Proceedings: summons
Sep 13, 2022
F3011.1 Oral Proceedings: summons
Sep 13, 2022
F3350 Communication regarding oral proceedings (art. 15 Rules of Procedure of the Boards of Appeal)
Sep 8, 2022
F3010 Oral proceedings: order for summons
Aug 17, 2022
F3303.16 Change of composition of the Board (T)
Jan 19, 2022
F3345 Forwarding of submissions to parties
Jan 13, 2022
(Electronic) Receipt
Jan 13, 2022
Letter accompanying subsequently filed items
Jan 13, 2022
Letter relating to Appeal Procedure
May 25, 2021
Composition of the board (T)
Mar 2, 2021
F3345 Forwarding of submissions to parties
Feb 25, 2021
(Electronic) Receipt
Feb 25, 2021
Letter accompanying subsequently filed items
Feb 25, 2021
Reply to appeal
Oct 15, 2020
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Oct 8, 2020
(Electronic) Receipt
Oct 8, 2020
Amended claims with annotations
Oct 8, 2020
Annexes (other than cited documents) regarding appeal procedure
Oct 8, 2020
Auxiliary request during Opposition procedure - 02
Oct 8, 2020
Letter accompanying subsequently filed items
Oct 8, 2020
Statement of grounds of appeal
Aug 17, 2020
F3204 Communication of the file number to the parties
Aug 17, 2020
F3204 Communication of the file number to the parties
Aug 10, 2020
(Electronic) Receipt
Aug 10, 2020
Letter accompanying subsequently filed items
Aug 10, 2020
Notice of appeal
Jun 11, 2020
(Electronic) Receipt
Jun 11, 2020
Advice of delivery
Jun 11, 2020
Letter accompanying subsequently filed items
Jun 9, 2020
Advice of delivery
May 29, 2020
Acknowledgement of a document
May 29, 2020
Acknowledgement of a document
May 29, 2020
Annex to the communication - opposition
May 29, 2020
Decision of the Opposition Division and instruction
May 29, 2020
Druckexemplar in opposition procedure
May 29, 2020
Grounds for the decision (Annex) - opposition
May 29, 2020
Interlocutory decision in opposition proceedings
May 29, 2020
Internal form - Opposition/addressees
May 29, 2020
Internal form - Opposition/addressees
May 29, 2020
Means of redress
May 29, 2020
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
May 29, 2020
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
May 29, 2020
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
May 29, 2020
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
May 29, 2020
Provision of a copy of the minutes - opposition procedure
May 29, 2020
Scanned annex to a communication - opposition procedure
May 29, 2020
Scanned annex to a communication - opposition procedure
May 29, 2020
Scanned annex to a communication - opposition procedure
Apr 22, 2020
Information about the result of oral proceedings
Apr 20, 2020
(Electronic) Receipt
Apr 20, 2020
Letter accompanying subsequently filed items
Apr 20, 2020
Written submission in preparation to/during oral proceedings
Apr 16, 2020
(Electronic) Receipt
Apr 16, 2020
Letter accompanying subsequently filed items
Apr 16, 2020
Written submission in preparation to/during oral proceedings
Apr 15, 2020
Notification concerning the date of oral proceedings
Apr 15, 2020
Notification concerning the date of oral proceedings
Apr 9, 2020
Summons to attend oral proceedings
Apr 7, 2020
Advice of delivery
Apr 6, 2020
Brief communication - Opposition proceedings
Apr 3, 2020
Notification concerning the date of oral proceedings
Apr 3, 2020
Notification concerning the date of oral proceedings
Apr 1, 2020
Brief communication - Opposition proceedings
Mar 31, 2020
(Electronic) Receipt
Mar 31, 2020
Letter accompanying subsequently filed items
Mar 31, 2020
Written submission in preparation to/during oral proceedings
Mar 25, 2020
(Electronic) Receipt
Mar 25, 2020
Advice of delivery
Mar 25, 2020
Letter accompanying subsequently filed items
Mar 25, 2020
Written submission in preparation to/during oral proceedings
Mar 25, 2020
Written submission in preparation to/during oral proceedings
Mar 23, 2020
Brief communication - Opposition proceedings
Mar 20, 2020
Brief communication - Opposition proceedings
Mar 20, 2020
Brief communication - Opposition proceedings
Mar 17, 2020
Annex to the communication - opposition
Mar 17, 2020
Notification concerning the date of oral proceedings
Mar 17, 2020
Notification concerning the date of oral proceedings
Mar 15, 2020
(Electronic) Receipt
Mar 15, 2020
Letter accompanying subsequently filed items
Mar 15, 2020
Oral proceedings: Request for postponement
Mar 13, 2020
Brief communication - Opposition proceedings
Mar 13, 2020
Brief communication - Opposition proceedings
Mar 9, 2020
(Electronic) Receipt
Mar 9, 2020
Letter accompanying subsequently filed items
Mar 9, 2020
Oral proceedings: Request for postponement
Jan 24, 2020
Brief communication - Opposition proceedings
Jan 21, 2020
Brief communication - Opposition proceedings
Jan 16, 2020
(Electronic) Receipt
Jan 16, 2020
(Electronic) Receipt
Jan 16, 2020
Citation in opposition procedure - 015
Jan 16, 2020
Citation in opposition procedure - 029
Jan 16, 2020
Citation in opposition procedure - 030
Jan 16, 2020
Consolidated list of cited opposition documents
Jan 16, 2020
Letter accompanying subsequently filed items
Jan 16, 2020
Letter accompanying subsequently filed items
Jan 16, 2020
Written submission in preparation to/during oral proceedings
Jan 16, 2020
Written submission in preparation to/during oral proceedings
Jan 16, 2020
Written submission in preparation to/during oral proceedings
Nov 19, 2019
Advice of delivery
Nov 5, 2019
Advice of delivery
Oct 21, 2019
(Electronic) Receipt
Oct 21, 2019
Advice of delivery
Oct 21, 2019
Letter accompanying subsequently filed items
Oct 18, 2019
Advice of delivery
Oct 18, 2019
Advice of delivery
Oct 10, 2019
Acknowledgement of a document
Oct 10, 2019
Acknowledgement of a document
Oct 10, 2019
Summons to attend oral proceedings
Oct 10, 2019
Summons to attend oral proceedings
Oct 9, 2019
Advice of delivery
Oct 7, 2019
Brief communication - Opposition proceedings
Sep 26, 2019
(Electronic) Receipt
Sep 26, 2019
Letter accompanying subsequently filed items
Sep 26, 2019
Written submission in preparation to/during oral proceedings
Sep 25, 2019
(Electronic) Receipt
Sep 25, 2019
Any annexes (other than citation) to an opposition letter
Sep 25, 2019
Any annexes (other than citation) to an opposition letter
Sep 25, 2019
Any annexes (other than citation) to an opposition letter
Sep 25, 2019
Letter accompanying subsequently filed items
Sep 25, 2019
Written submission in preparation to/during oral proceedings
Sep 24, 2019
Advice of delivery
Sep 16, 2019
(Electronic) Receipt
Sep 16, 2019
Advice of delivery
Sep 16, 2019
Letter accompanying subsequently filed items
Sep 10, 2019
Acknowledgement of a document
Sep 10, 2019
Acknowledgement of a document
Sep 10, 2019
Annex to the communication - opposition
Sep 10, 2019
Information concerning oral proceedings
Sep 10, 2019
Summons to attend oral proceedings
Sep 10, 2019
Summons to attend oral proceedings
May 3, 2019
Brief communication - Opposition proceedings
Apr 26, 2019
(Electronic) Receipt
Apr 26, 2019
Any annexes (other than citation) to an opposition letter
Apr 26, 2019
Auxiliary request during Opposition procedure - 01
Apr 26, 2019
Auxiliary request during Opposition procedure - 01
Apr 26, 2019
Auxiliary request during Opposition procedure - 02
Apr 26, 2019
Auxiliary request during Opposition procedure - 02
Apr 26, 2019
Auxiliary request during Opposition procedure - 03
Apr 26, 2019
Auxiliary request during Opposition procedure - 03
Apr 26, 2019
Auxiliary request during Opposition procedure - 04
Apr 26, 2019
Auxiliary request during Opposition procedure - 04
Apr 26, 2019
Auxiliary request during Opposition procedure - 05
Apr 26, 2019
Auxiliary request during Opposition procedure - 05
Apr 26, 2019
Auxiliary request during Opposition procedure - 06
Apr 26, 2019
Auxiliary request during Opposition procedure - 06
Apr 26, 2019
Auxiliary request during Opposition procedure - 07
Apr 26, 2019
Auxiliary request during Opposition procedure - 07
Apr 26, 2019
Auxiliary request during Opposition procedure - 08
Apr 26, 2019
Auxiliary request during Opposition procedure - 08
Apr 26, 2019
Auxiliary request during Opposition procedure - 09
Apr 26, 2019
Auxiliary request during Opposition procedure - 09
Apr 26, 2019
Auxiliary request during Opposition procedure - 10
Apr 26, 2019
Auxiliary request during Opposition procedure - 10
Apr 26, 2019
Auxiliary request during Opposition procedure - 11
Apr 26, 2019
Auxiliary request during Opposition procedure - 11
Apr 26, 2019
Auxiliary request during Opposition procedure - 12
Apr 26, 2019
Auxiliary request during Opposition procedure - 12
Apr 26, 2019
Auxiliary request during Opposition procedure - 13
Apr 26, 2019
Auxiliary request during Opposition procedure - 13
Apr 26, 2019
Auxiliary request during Opposition procedure - 14
Apr 26, 2019
Auxiliary request during Opposition procedure - 14
Apr 26, 2019
Auxiliary request during Opposition procedure - 15
Apr 26, 2019
Auxiliary request during Opposition procedure - 15
Apr 26, 2019
Auxiliary request during Opposition procedure - 16
Apr 26, 2019
Auxiliary request during Opposition procedure - 16
Apr 26, 2019
Auxiliary request during Opposition procedure - 17
Apr 26, 2019
Auxiliary request during Opposition procedure - 17
Apr 26, 2019
Auxiliary request during Opposition procedure - 18
Apr 26, 2019
Auxiliary request during Opposition procedure - 18
Apr 26, 2019
Auxiliary request during Opposition procedure - 19
Apr 26, 2019
Auxiliary request during Opposition procedure - 19
Apr 26, 2019
Auxiliary request during Opposition procedure - 20
Apr 26, 2019
Auxiliary request during Opposition procedure - 20
Apr 26, 2019
Auxiliary request during Opposition procedure - 21
Apr 26, 2019
Auxiliary request during Opposition procedure - 21
Apr 26, 2019
Auxiliary request during Opposition procedure - 22
Apr 26, 2019
Auxiliary request during Opposition procedure - 22
Apr 26, 2019
Auxiliary request during Opposition procedure - 23
Apr 26, 2019
Auxiliary request during Opposition procedure - 23
Apr 26, 2019
Auxiliary request during Opposition procedure - 24
Apr 26, 2019
Auxiliary request during Opposition procedure - 24
Apr 26, 2019
Auxiliary request during Opposition procedure - 25
Apr 26, 2019
Auxiliary request during Opposition procedure - 25
Apr 26, 2019
Auxiliary request during Opposition procedure - 26
Apr 26, 2019
Auxiliary request during Opposition procedure - 26
Apr 26, 2019
Auxiliary request during Opposition procedure - 27
Apr 26, 2019
Auxiliary request during Opposition procedure - 27
Apr 26, 2019
Auxiliary request during Opposition procedure - 28
Apr 26, 2019
Auxiliary request during Opposition procedure - 28
Apr 26, 2019
Citation in opposition procedure - 021
Apr 26, 2019
Citation in opposition procedure - 022
Apr 26, 2019
Citation in opposition procedure - 023
Apr 26, 2019
Citation in opposition procedure - 024
Apr 26, 2019
Citation in opposition procedure - 025
Apr 26, 2019
Citation in opposition procedure - 026
Apr 26, 2019
Citation in opposition procedure - 027
Apr 26, 2019
Citation in opposition procedure - 028
Apr 26, 2019
Letter accompanying subsequently filed items
Apr 26, 2019
Main request during Opposition procedure
Apr 26, 2019
Reply of the patent proprietor to the notice(s) of opposition
Feb 21, 2019
Brief communication - Opposition proceedings
Feb 21, 2019
Grant of extension of time limit (opposition procedure)
Feb 8, 2019
(Electronic) Receipt
Feb 8, 2019
Letter accompanying subsequently filed items
Feb 8, 2019
Request for extension of time limit
Nov 19, 2018
Brief communication - Opposition proceedings
Nov 19, 2018
Communication confirming withdrawal from representation
Nov 19, 2018
Communication of amended entries concerning the representative
Nov 12, 2018
(Electronic) Receipt
Nov 12, 2018
Letter accompanying subsequently filed items
Nov 12, 2018
Submission concerning change of applicant's representative
Nov 8, 2018
(Electronic) Receipt
Nov 8, 2018
Brief communication - Opposition proceedings
Nov 8, 2018
Letter accompanying subsequently filed items
Nov 8, 2018
Submission concerning change of applicant's representative
Oct 31, 2018
(Electronic) Receipt
Oct 31, 2018
Citation in opposition procedure - 001
Oct 31, 2018
Citation in opposition procedure - 002
Oct 31, 2018
Citation in opposition procedure - 003
Oct 31, 2018
Citation in opposition procedure - 004
Oct 31, 2018
Citation in opposition procedure - 005
Oct 31, 2018
Citation in opposition procedure - 006
Oct 31, 2018
Citation in opposition procedure - 007
Oct 31, 2018
Citation in opposition procedure - 008
Oct 31, 2018
Citation in opposition procedure - 009
Oct 31, 2018
Citation in opposition procedure - 011
Oct 31, 2018
Letter accompanying subsequently filed items
Oct 31, 2018
Letter regarding the opposition procedure (no time limit)
Oct 17, 2018
Communication of a notice of opposition and request to file observations
Oct 17, 2018
Notice of further oppositions to opponent(s)
Oct 12, 2018
Communication of a notice of opposition - first information to patent proprietor
Oct 12, 2018
Request for documents
Oct 4, 2018
(Electronic) Receipt
Oct 4, 2018
Citation in opposition procedure - 010
Oct 4, 2018
Citation in opposition procedure - 012
Oct 4, 2018
Citation in opposition procedure - 013
Oct 4, 2018
Citation in opposition procedure - 014
Oct 4, 2018
Citation in opposition procedure - 015
Oct 4, 2018
Citation in opposition procedure - 016
Oct 4, 2018
Citation in opposition procedure - 017
Oct 4, 2018
Citation in opposition procedure - 018
Oct 4, 2018
Citation in opposition procedure - 019
Oct 4, 2018
Citation in opposition procedure - 020
Oct 4, 2018
Notice of opposition
Oct 4, 2018
Notice of opposition
Jan 26, 2018
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Dec 7, 2017
Decision to grant a European patent
Nov 20, 2017
(Electronic) Receipt
Nov 20, 2017
Filing of the translations of the claims
Nov 20, 2017
French translation of claims
Nov 20, 2017
German translation of the claims
Nov 20, 2017
Letter accompanying subsequently filed items
Jul 14, 2017
Bibliographic data of the European patent application
Jul 14, 2017
Communication about intention to grant a European patent
Jul 14, 2017
Intention to grant (signatures)
Jul 14, 2017
Text intended for grant (clean copy)
Jul 14, 2017
Text intended for grant (version for approval)
Jun 12, 2017
Communication of amended entries concerning the representative
Jun 7, 2017
Submission concerning change of applicant's representative
Jun 6, 2017
Submission concerning change of applicant's representative
May 24, 2017
(Electronic) Receipt
May 24, 2017
Amended claims with annotations
May 24, 2017
Amended description with annotations
May 24, 2017
Claims
May 24, 2017
Description
May 24, 2017
Letter accompanying subsequently filed items
May 24, 2017
Reply to communication from the Examining Division
Jan 18, 2017
Annex to the communication
Jan 18, 2017
Communication from the Examining Division
Jan 5, 2017
(Electronic) Receipt
Jan 5, 2017
Letter accompanying subsequently filed items
Jan 5, 2017
Reply to communication from the Examining Division
Sep 9, 2016
Annex to the communication
Sep 9, 2016
Communication from the Examining Division
Mar 21, 2016
(Electronic) Receipt
Mar 21, 2016
Amended claims filed after receipt of (European) search report
Mar 21, 2016
Amended claims with annotations
Mar 21, 2016
Amendments received before examination
Mar 21, 2016
Letter accompanying subsequently filed items
Sep 24, 2015
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Sep 7, 2015
Communication regarding the transmission of the European search report
Sep 7, 2015
European search opinion
Sep 7, 2015
Supplementary European search report
Aug 25, 2015
Search started
Mar 2, 2015
Communication to designated inventor
Feb 23, 2015
(Electronic) Receipt
Feb 23, 2015
Letter accompanying subsequently filed items
Feb 23, 2015
Letter concerning the inventor
Jan 30, 2015
Invitation to indicate correct address of inventor
Jan 15, 2015
Letter which had not been notified
Dec 17, 2014
Notification on forthcoming publication of bibliographic data
Oct 23, 2014
Communication regarding possible amendment of the application/payment of claims fee
Oct 21, 2014
Communication to designated inventor
Oct 21, 2014
Communication to designated inventor
Oct 21, 2014
Communication to designated inventor
Oct 21, 2014
Communication to designated inventor
Oct 21, 2014
Communication to designated inventor
Oct 21, 2014
Communication to designated inventor
Oct 7, 2014
(Electronic) Receipt
Oct 7, 2014
Amended claims filed after receipt of (European) search report
Oct 7, 2014
Amended claims with annotations
Oct 7, 2014
Matter concerning the application
Oct 7, 2014
Request for entry into the European phase
Sep 22, 2014
Copy of the international preliminary report on patentability
Jul 16, 2014
Information on entry into European phase
Nov 21, 2013
Republication of front page of international application with corrected bibliographic data
Oct 15, 2013
Communication in cases for which no other form is applicable
Oct 1, 2013
Priority document (electronically transmitted)
Oct 1, 2013
Priority document (electronically transmitted)
Sep 12, 2013
Copy of the international search report
Sep 12, 2013
International publication (Pamphlet)
Sep 12, 2013
Published international application - A1

EP2823062

THE CHINESE UNIVERSITY OF HONG KONG

Application Number: EP13757943A
Filing Date: Mar 8, 2013
Status: Granted And Under Opposition; Dec 1, 2017
Publication Date: Jan 3, 2018
External Links: Slate, Register , Google Patents