Constrained Prosthetic Knee With Rotating Bearing

Patent No. EP1226800 (titled "Constrained Prosthetic Knee With Rotating Bearing") was filed by Letson on Jan 25, 2002. The application was issued on Jul 2, 2014.

Patent Family

Statuses, jurisdictions and citation links are shared on request.

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
AESCULAP	Apr 2, 2015	HOEGER

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

Jan 4, 2022
Termination of the opposition proceedings with revocation of patent
Oct 25, 2021
Advice of delivery
Oct 7, 2021
(Electronic) Receipt
Oct 7, 2021
Advice of delivery
Oct 7, 2021
Letter accompanying subsequently filed items
Oct 6, 2021
Advice of delivery
Oct 4, 2021
Decision revoking the European Patent (patent proprietor)
Oct 4, 2021
Decision revoking the European patent (opponent)
Oct 4, 2021
Transmittal of decision / summons - opposition
Oct 4, 2021
Transmittal of decision / summons - opposition
Jul 6, 2021
Communication concerning surcharge and failure to observe time limit
Feb 18, 2021
Communication of bibliographic data
Feb 18, 2021
Communication with request to file translations
Feb 12, 2021
Maintenance of the patent with the documents specified in the final decision
Feb 8, 2021
Refund of fees
Feb 1, 2021
Maintenance of the patent with the documents specified in the final decision
Jan 29, 2021
Advice of delivery
Jan 28, 2021
F3014 Oral Proceedings: Order cancelling/postponing
Jan 28, 2021
F3017 Oral Proceedings: Notification of cancellation/postponing
Jan 28, 2021
F3324 Closure of the appeal proceedings: withdrawal of the appeal/ application/ opposition
Dec 16, 2020
Withdrawal of an appeal
Nov 30, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Nov 26, 2020
Advice of delivery
Nov 24, 2020
F3011.1 Oral Proceedings: summons
Nov 19, 2020
F3010 Oral proceedings: order for summons
Jul 3, 2020
F3303.16 Change of composition of the Board (T)
Feb 18, 2019
Submission concerning representation
May 22, 2018
Refund of fees
May 18, 2018
F3348 Confirmation of withdrawal of the opposition by the respondent and former opponent
May 15, 2018
(Electronic) Receipt
May 15, 2018
Letter accompanying subsequently filed items
May 15, 2018
Withdrawal of an opposition
Feb 19, 2018
Composition of the board (T)
Nov 17, 2017
F3345 Forwarding of submissions to parties
Nov 17, 2017
F3345 Forwarding of submissions to parties
Nov 6, 2017
(Electronic) Receipt
Nov 6, 2017
Annexes (other than cited documents) regarding appeal procedure
Nov 6, 2017
Annexes (other than cited documents) regarding appeal procedure
Nov 6, 2017
Annexes (other than cited documents) regarding appeal procedure
Nov 6, 2017
Annexes (other than cited documents) regarding appeal procedure
Nov 6, 2017
Annexes (other than cited documents) regarding appeal procedure
Nov 6, 2017
Annexes (other than cited documents) regarding appeal procedure
Nov 6, 2017
Letter accompanying subsequently filed items
Nov 6, 2017
Reply to appeal
Nov 6, 2017
Reply to appeal
Jun 26, 2017
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Jun 19, 2017
(Electronic) Receipt
Jun 19, 2017
Annexes (other than cited documents) regarding appeal procedure
Jun 19, 2017
Annexes (other than cited documents) regarding appeal procedure
Jun 19, 2017
Annexes (other than cited documents) regarding appeal procedure
Jun 19, 2017
Annexes (other than cited documents) regarding appeal procedure
Jun 19, 2017
Letter accompanying subsequently filed items
Jun 19, 2017
Statement of grounds of appeal
Jun 14, 2017
Amended claims with annotations
Jun 14, 2017
Amended claims with annotations
Jun 14, 2017
Amended claims with annotations
Jun 14, 2017
Amended claims with annotations
Jun 14, 2017
Amended claims with annotations
Jun 14, 2017
Claims
Jun 14, 2017
Statement of grounds of appeal
Apr 27, 2017
F3204 Communication of the file number to the parties
Apr 19, 2017
F3204 Communication of the file number to the parties
Apr 12, 2017
Notice of appeal
Apr 12, 2017
Payment of fees and costs
Apr 11, 2017
Processing of an appeal
Apr 7, 2017
(Electronic) Receipt
Apr 7, 2017
Letter accompanying subsequently filed items
Apr 7, 2017
Notice of appeal
Mar 30, 2017
Submission concerning representation
Mar 30, 2017
Submission concerning representation
Mar 9, 2017
Advice of delivery
Feb 27, 2017
Advice of delivery
Feb 16, 2017
Advice of delivery
Feb 9, 2017
Advice of delivery
Feb 7, 2017
Acknowledgement of a document
Feb 7, 2017
Acknowledgement of a document
Feb 7, 2017
Annex to the communication - opposition
Feb 7, 2017
Decision of the Opposition Division and instruction
Feb 7, 2017
Druckexemplar in opposition procedure
Feb 7, 2017
Grounds for the decision (Annex) - opposition
Feb 7, 2017
Interlocutory decision in opposition proceedings
Feb 7, 2017
Internal form - Opposition/addressees
Feb 7, 2017
Internal form - Opposition/addressees
Feb 7, 2017
Means of redress
Feb 7, 2017
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Feb 7, 2017
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Feb 7, 2017
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Feb 7, 2017
Provision of a copy of the minutes - opposition procedure
Feb 7, 2017
Scanned annex to a communication - opposition procedure
Feb 7, 2017
Scanned annex to a communication - opposition procedure
Feb 7, 2017
Scanned annex to a communication - opposition procedure
Nov 21, 2016
Information about the result of oral proceedings
Oct 28, 2016
Brief communication - Opposition proceedings
Oct 28, 2016
Brief communication - Opposition proceedings
Oct 21, 2016
(Electronic) Receipt
Oct 21, 2016
Amended claims with annotations
Oct 21, 2016
Amended claims with annotations
Oct 21, 2016
Amended claims with annotations
Oct 21, 2016
Amended claims with annotations
Oct 21, 2016
Amended claims with annotations
Oct 21, 2016
Auxiliary request during Opposition procedure
Oct 21, 2016
Auxiliary request during Opposition procedure
Oct 21, 2016
Auxiliary request during Opposition procedure
Oct 21, 2016
Auxiliary request during Opposition procedure
Oct 21, 2016
Auxiliary request during Opposition procedure
Oct 21, 2016
Letter accompanying subsequently filed items
Oct 21, 2016
Non-patent literature cited during the opposition procedure
Oct 21, 2016
Written submission in preparation to/during oral proceedings
Oct 21, 2016
Written submission in preparation to/during oral proceedings
Sep 26, 2016
Brief communication - Opposition proceedings
Sep 16, 2016
Request for interpreters during oral proceedings
Jun 9, 2016
Brief communication - Opposition proceedings
Jun 2, 2016
(Electronic) Receipt
Jun 2, 2016
Letter accompanying subsequently filed items
Jun 2, 2016
Request for interpreters during oral proceedings
May 31, 2016
Advice of delivery
May 31, 2016
Advice of delivery
May 25, 2016
Advice of delivery
May 23, 2016
Advice of delivery
May 19, 2016
Acknowledgement of a document
May 19, 2016
Acknowledgement of a document
May 19, 2016
Annex to the communication - opposition
May 19, 2016
Information concerning oral proceedings
May 19, 2016
Preparation for oral proceedings
May 19, 2016
Summons to attend oral proceedings
May 19, 2016
Summons to attend oral proceedings
Dec 16, 2015
Brief communication - Opposition proceedings
Dec 8, 2015
Reply of the patent proprietor to the notice(s) of opposition
Oct 19, 2015
Brief communication - Opposition proceedings
Oct 19, 2015
Grant of extension of time limit (opposition procedure)
Oct 14, 2015
General enquiry
Oct 14, 2015
Letter accompanying subsequently filed items
Oct 14, 2015
Letter accompanying subsequently filed items
Oct 9, 2015
Request for extension of time limit
Aug 21, 2015
Brief communication - Opposition proceedings
Aug 21, 2015
Communication of amended entries
Jul 6, 2015
Request concerning representative opponent
May 29, 2015
Communication of a notice of opposition and request to file observations
May 29, 2015
Notice of further oppositions to opponent(s)
Apr 30, 2015
Brief communication - Opposition proceedings
Apr 21, 2015
(Electronic) Receipt
Apr 21, 2015
Any annexes (other than citation) to an opposition letter
Apr 21, 2015
Letter accompanying subsequently filed items
Apr 21, 2015
Letter regarding the opposition procedure (no time limit)
Apr 21, 2015
Non-patent literature cited during the opposition procedure
Apr 10, 2015
Communication of a notice of opposition - first information to patent proprietor
Apr 2, 2015
(Electronic) Receipt
Apr 2, 2015
Any annexes (other than citation) to an opposition letter
Apr 2, 2015
Any annexes (other than citation) to an opposition letter
Apr 2, 2015
Any annexes (other than citation) to an opposition letter
Apr 2, 2015
Any annexes (other than citation) to an opposition letter
Apr 2, 2015
Non-patent literature cited during the opposition procedure
Apr 2, 2015
Non-patent literature cited during the opposition procedure
Apr 2, 2015
Non-patent literature cited during the opposition procedure
Apr 2, 2015
Notice of opposition
Apr 2, 2015
Notice of opposition
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Apr 2, 2015
Patent document cited during the opposition procedure
Jul 2, 2014
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jun 5, 2014
Decision to grant a European patent
Jun 4, 2014
Decision to allow further processing
Apr 30, 2014
Filing of the translations of the claims
Apr 30, 2014
French translation of claims
Apr 30, 2014
German translation of the claims
Apr 30, 2014
Payment of fees and costs
Apr 30, 2014
Payment of fees and costs
Apr 30, 2014
Request for further processing
Feb 20, 2014
Application deemed to be withdrawn ( translations of claims/payment missing)
Dec 12, 2013
CDS Clean up - amended data concerning the representative of the applicant (Association)
Aug 26, 2013
Bibliographic data of the European patent application
Aug 26, 2013
Communication about intention to grant a European patent
Aug 26, 2013
Intention to grant (signatures)
Aug 26, 2013
Text intended for grant
Aug 8, 2013
Communication of the registration of a transfer or change of name and/or address
Jul 30, 2013
Processing of request for correction of text proposed for grant or third party observations (from 01-04-2012)
Jun 14, 2013
Submission concerning a transfer of rights (applicant)
May 16, 2013
Description
May 16, 2013
Request for correction/amendment of the text proposed for grant sent from 01.04.2012
Apr 12, 2013
Bibliographic data of the European patent application
Apr 12, 2013
Communication about intention to grant a European patent
Apr 12, 2013
Intention to grant (signatures)
Apr 12, 2013
Text intended for grant
May 12, 2011
Amended claims with annotations
May 12, 2011
Claims
May 12, 2011
Reply to communication from the Examining Division
Mar 14, 2011
Grant of extension of time limit (examination procedure)
Mar 4, 2011
Request for extension of time limit to communication from the Examining Division
Nov 2, 2010
Annex to the communication
Nov 2, 2010
Communication from the Examining Division
Sep 30, 2010
Amended claims filed after receipt of (European) search report
Sep 30, 2010
Amendments received before examination
Sep 30, 2010
Amendments received before examination
Sep 16, 2010
Communication confirming withdrawal from representation
Sep 16, 2010
Communication of amended entries concerning the representative
Sep 6, 2010
Submission concerning change of applicant's representative
Sep 3, 2010
Submission concerning change of applicant's representative
Aug 31, 2010
Submission concerning change of applicant's representative
Apr 25, 2008
Submission concerning representation
Feb 22, 2005
Final instructions (loss of partial rights)
Nov 12, 2004
Designation deemed to be withdrawn (non payment of designation fees)
Aug 25, 2004
Communication concerning non paid of designation fees
Apr 26, 2004
Letter concerning the designation and/or extension and/or validation of states
Apr 22, 2004
Letter concerning the designation and/or extension and/or validation of states
Mar 22, 2004
Amended claims filed after receipt of (European) search report
Mar 22, 2004
Amendments received before examination
Mar 19, 2004
Amendments received before examination
Jan 12, 2004
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Nov 24, 2003
Communication regarding the transmission of the European search report
Nov 24, 2003
Declaration that a search is not possible
Jun 19, 2002
Notification of forthcoming publication
Apr 8, 2002
Communication to designated inventor
Apr 8, 2002
Communication to designated inventor
Apr 8, 2002
Communication to designated inventor
Apr 8, 2002
Communication to designated inventor
Apr 8, 2002
Communication to designated inventor
Apr 8, 2002
Communication to designated inventor
Apr 8, 2002
Communication to designated inventor
Apr 8, 2002
Communication to designated inventor
Apr 8, 2002
Communication to designated inventor
Apr 8, 2002
Communication to designated inventor
Apr 8, 2002
Communication to designated inventor
Feb 15, 2002
Letter concerning fees and payments
Feb 12, 2002
Letter concerning fees and payments
Jan 25, 2002
Abstract
Jan 25, 2002
Claims
Jan 25, 2002
Description
Jan 25, 2002
Designation of inventor
Jan 25, 2002
Drawings
Jan 25, 2002
Priority document
Jan 25, 2002
Request for grant of a European patent

EP1226800

LETSON

Application Number: EP02250512A
Filing Date: Jan 25, 2002
Status: Revoked; Jan 7, 2022
Publication Date: Jul 2, 2014
External Links: Slate, Register , Google Patents

IP Verse

Constrained Prosthetic Knee With Rotating Bearing

Patent Summary

Patent Family

Patent Oppositions

Dossier Documents

EP1226800