The patent EP1891671 was granted to Koninklijke Philips on Aug 19, 2020. The application was originally filed on May 19, 2006 under application number EP06741539A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | US6837598 |
| INTERNATIONAL-SEARCH-REPORT | JPH11142321 |
| INTERNATIONAL-SEARCH-REPORT | US2005045902 |
| INTERNATIONAL-SEARCH-REPORT | US2005077616 |
| INTERNATIONAL-SEARCH-REPORT | US6812637 |
| OPPOSITION | DE10102353 |
| OPPOSITION | DE20215834U |
| OPPOSITION | EP0669492 |
| OPPOSITION | EP1182396 |
| OPPOSITION | ES1058065U |
| OPPOSITION | KR20030016347 |
| OPPOSITION | US2003048641 |
| OPPOSITION | US2005024834 |
| OPPOSITION | WO2004094896 |
| SEARCH | DE20215834U |
| SEARCH | US2002125839 |
| SEARCH | US2003048641 |
| SEARCH | US2005053336 |
| SEARCH | US4345308 |
| SEARCH | US5410453 |
| SEARCH | US5857767 |
| SEARCH | US6045240 |
| SEARCH | US6502956 |
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
| Citation Phase | Reference Text |
|---|---|
| OPPOSITION | - Anonymous, "Power light source Luxeon Star", Luxeon Star Technical Datasheet DS23, (20050400), pages 1 - 19, XP055953465 |
| OPPOSITION | - Anonymous, "Thermal Design Using Luxeon Power Light Sources Application Brief AB05", Luxeon, (320050000), pages 1 - 12, XP055953476 |
Get a free citation report including examiner, opposition, and international search citations.
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Date
Description
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Oct 17, 2025
Oct 16, 2025
(Electronic) Receipt
Appeal
Oct 16, 2025
Oct 16, 2025
Jun 6, 2025
Jun 6, 2025
Jun 3, 2025
Oct 12, 2023
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Oct 10, 2023
(Electronic) Receipt
Appeal
Oct 10, 2023
Oct 10, 2023
Oct 10, 2023
Reply to appeal
Appeal
Oct 9, 2023
(Electronic) Receipt
Appeal
Oct 9, 2023
Oct 9, 2023
Reply to appeal
Appeal
Jun 12, 2023
Jun 6, 2023
(Electronic) Receipt
Appeal
Jun 6, 2023
Jun 6, 2023
Jun 1, 2023
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May 30, 2023
May 26, 2023
(Electronic) Receipt
Appeal
May 26, 2023
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(Electronic) Receipt
Appeal
May 23, 2023
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(Electronic) Receipt
Appeal
Mar 27, 2023
Mar 27, 2023
Notice of appeal
Appeal
Mar 23, 2023
(Electronic) Receipt
Appeal
Mar 23, 2023
Mar 23, 2023
Notice of appeal
Appeal
Feb 3, 2023
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Means of redress
OPPO
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Authorisation
OPPO
May 19, 2021
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Aug 31, 2020
Jul 23, 2020
Decision to grant a European patent
Search/Exam
Jul 13, 2020
(Electronic) Receipt
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Jul 13, 2020
Filing of the translations of the claims
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Jul 13, 2020
French translation of claims
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Jul 13, 2020
German translation of the claims
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Mar 25, 2020
Mar 25, 2020
Mar 25, 2020
Intention to grant (signatures)
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Mar 25, 2020
Text intended for grant (clean copy)
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Mar 25, 2020
Mar 13, 2020
Feb 27, 2020
(Electronic) Receipt
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Feb 27, 2020
Amended claims with annotations
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Feb 27, 2020
Claims
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Feb 27, 2020
Letter accompanying subsequently filed items
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Feb 27, 2020
Letter dealing with oral proceedings
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Nov 25, 2019
Annex to the communication
Search/Exam
Nov 25, 2019
Summons to attend oral proceedings
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May 14, 2019
Decision to allow further processing
Search/Exam
Apr 30, 2019
(Electronic) Receipt
Search/Exam
Apr 30, 2019
Amended claims with annotations
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Apr 30, 2019
Claims
Search/Exam
Apr 30, 2019
Letter accompanying subsequently filed items
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Apr 30, 2019
Request for further processing
Search/Exam
Feb 22, 2019
Feb 22, 2019
Submission concerning representation
Search/Exam
Feb 11, 2019
Feb 5, 2019
Feb 4, 2019
Feb 4, 2019
Submission concerning representation
Search/Exam
Nov 21, 2018
Nov 15, 2018
(Electronic) Receipt
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Nov 15, 2018
Letter accompanying subsequently filed items
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Nov 15, 2018
Nov 13, 2018
Nov 8, 2018
Nov 8, 2018
Submission concerning representation
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Jul 16, 2018
Annex to the communication
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Jul 16, 2018
Communication from the Examining Division
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Jul 5, 2018
Examination started
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Sep 25, 2017
Sep 12, 2017
(Electronic) Receipt
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Sep 12, 2017
Enquiry as to the processing of the file
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Sep 12, 2017
Letter accompanying subsequently filed items
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Jun 8, 2017
Letter concerning the inventor
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Oct 12, 2016
Submission concerning representation
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Oct 12, 2016
Submission concerning representation
Search/Exam
Jul 25, 2016
Jul 19, 2016
Annexes in respect of a client data request
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Jul 19, 2016
Annexes in respect of a client data request
Search/Exam
Jun 28, 2016
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Dec 28, 2015
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Submission concerning representation
Search/Exam
Jun 10, 2014
Letter accompanying subsequently filed items
Search/Exam
Jun 10, 2014
Reply to Written Opinion prepared by the EPO
Search/Exam
Dec 5, 2013
Nov 18, 2013
Nov 18, 2013
European search opinion
Search/Exam
Nov 18, 2013
Supplementary European search report
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Nov 14, 2013
Submission concerning representation
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Nov 4, 2013
Search started
Search/Exam
Aug 22, 2013
Aug 14, 2013
Annexes in respect of a client data request
Search/Exam
Aug 13, 2013
Jun 25, 2009
Jun 15, 2009
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Dec 13, 2007
Request for entry into the European phase
Search/Exam
Dec 12, 2007
Dec 12, 2007
Letter concerning fees and payments
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Dec 12, 2007
Payment of fees and costs
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Dec 12, 2007
Request for entry into the European phase
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Sep 28, 2007
Information on entry into European phase
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Dec 12, 2006
Nov 23, 2006
Copy of the international search report
Search/Exam
Nov 23, 2006
Published international application - A1
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