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The patent EP1872588 was granted to Interdigital VC on Jan 27, 2021. The application was filed on Mar 16, 2006 under application number EP06738965A. The patent is currently recorded with a legal status of "Revoked".

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 | Opposition Status |
|---|---|---|---|
| UNIFIED PATENTS | Oct 26, 2021 | HGF | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US5724450 |
| OPPOSITION | KR20040028318 |
| OPPOSITION | KR20050009216 |
| OPPOSITION | US2004062445 |
| OPPOSITION | US2005013370 |
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 1, 2022
Jul 1, 2022
Jun 28, 2022
Jun 28, 2022
Mar 17, 2022
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Feb 8, 2021
Jan 14, 2021
Decision to grant a European patent
Search/Exam
Dec 16, 2020
(Electronic) Receipt
Search/Exam
Dec 16, 2020
Letter accompanying subsequently filed items
Search/Exam
Dec 15, 2020
(Electronic) Receipt
Search/Exam
Dec 15, 2020
Filing of the translations of the claims
Search/Exam
Dec 15, 2020
French translation of claims
Search/Exam
Dec 15, 2020
German translation of the claims
Search/Exam
Sep 23, 2020
Sep 23, 2020
Sep 23, 2020
Intention to grant (signatures)
Search/Exam
Sep 23, 2020
Text intended for grant (clean copy)
Search/Exam
Sep 23, 2020
Sep 17, 2020
Sep 4, 2020
(Electronic) Receipt
Search/Exam
Sep 4, 2020
Amended claims with annotations
Search/Exam
Sep 4, 2020
Claims
Search/Exam
Sep 4, 2020
Description
Search/Exam
Sep 4, 2020
Description
Search/Exam
Sep 4, 2020
Letter accompanying subsequently filed items
Search/Exam
Sep 4, 2020
May 14, 2020
May 7, 2020
(Electronic) Receipt
Search/Exam
May 7, 2020
Letter accompanying subsequently filed items
Search/Exam
May 7, 2020
May 7, 2020
Mar 3, 2020
Annex to the communication
Search/Exam
Mar 3, 2020
Summons to attend oral proceedings
Search/Exam
Jan 13, 2020
(Electronic) Receipt
Search/Exam
Jan 13, 2020
Amended claims with annotations
Search/Exam
Jan 13, 2020
Claims
Search/Exam
Jan 13, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 13, 2020
Nov 29, 2019
Nov 25, 2019
Nov 25, 2019
Nov 19, 2019
(Electronic) Receipt
Search/Exam
Nov 19, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 19, 2019
Jul 15, 2019
Submission concerning representation
Search/Exam
Jul 11, 2019
Annex to the communication
Search/Exam
Jul 11, 2019
Communication from the Examining Division
Search/Exam
Jan 31, 2019
Jan 17, 2019
Annexes in respect of a client data request
Search/Exam
Jan 17, 2019
Jan 10, 2019
Dec 14, 2018
Annexes in respect of a client data request
Search/Exam
Dec 14, 2018
Nov 15, 2018
Submission concerning representation
Search/Exam
Oct 10, 2018
Submission concerning representation
Search/Exam
Aug 29, 2018
Aug 29, 2018
Aug 24, 2018
Aug 23, 2018
Oct 9, 2017
(Electronic) Receipt
Search/Exam
Oct 9, 2017
Amended claims with annotations
Search/Exam
Oct 9, 2017
Claims
Search/Exam
Oct 9, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 9, 2017
Jul 27, 2017
Jul 24, 2017
(Electronic) Receipt
Search/Exam
Jul 24, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 24, 2017
Apr 7, 2017
Annex to the communication
Search/Exam
Apr 7, 2017
Communication from the Examining Division
Search/Exam
Sep 20, 2016
Sep 16, 2016
Submission concerning representation
Search/Exam
May 9, 2016
Apr 5, 2016
Mar 30, 2016
Jun 28, 2010
CDS Clean up - amended applicant details
Search/Exam
Jun 21, 2010
Jan 19, 2010
Dec 23, 2009
Jul 31, 2009
Claims
Search/Exam
Jul 31, 2009
May 13, 2009
May 7, 2009
Apr 1, 2009
Apr 1, 2009
Mar 17, 2009
Jan 29, 2009
Annex to the communication
Search/Exam
Jan 29, 2009
Communication from the Examining Division
Search/Exam
Aug 12, 2008
Aug 12, 2008
Jun 4, 2008
Final instructions (loss of partial rights)
Search/Exam
Feb 19, 2008
Dec 21, 2007
Amendments received before examination
Search/Exam
Dec 21, 2007
Amendments received before examination
Search/Exam
Dec 21, 2007
Payment of fees and costs
Search/Exam
Dec 5, 2007
Nov 20, 2007
Nov 16, 2007
Communication to designated inventor
Search/Exam
Oct 30, 2007
Oct 15, 2007
Oct 15, 2007
Request for entry into the European phase
Search/Exam
Aug 31, 2007
Information on entry into European phase
Search/Exam
Nov 14, 2006
Nov 14, 2006
Oct 26, 2006
Copy of the international search report
Search/Exam
Oct 26, 2006
Published international application - A1
Search/Exam
May 11, 2006
Abstract
PCTISA
May 11, 2006
Claims
PCTISA
May 11, 2006
Description
PCTISA
May 11, 2006
Drawings
PCTISA
May 11, 2006