The patent EP4204396 was granted to Unilever on May 29, 2024. The application was originally filed on Aug 17, 2021 under application number EP21765624A. 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 |
|---|---|
| DESCRIPTION | EP0218272 |
| DESCRIPTION | EP0258068 |
| DESCRIPTION | EP0260105 |
| DESCRIPTION | EP0305216 |
| DESCRIPTION | EP0331376 |
| DESCRIPTION | EP0407225 |
| DESCRIPTION | GB1296839 |
| DESCRIPTION | GB1372034 |
| DESCRIPTION | US4435307 |
| DESCRIPTION | US4760025 |
| DESCRIPTION | US5648263 |
| DESCRIPTION | US5679630 |
| DESCRIPTION | US5691178 |
| DESCRIPTION | US5776757 |
| DESCRIPTION | US6312936 |
| DESCRIPTION | US7262042 |
| DESCRIPTION | WO0060060 |
| DESCRIPTION | WO0060063 |
| DESCRIPTION | WO0116285 |
| DESCRIPTION | WO0216547 |
| DESCRIPTION | WO0226024 |
| DESCRIPTION | WO2005003274 |
| DESCRIPTION | WO2005040372 |
| DESCRIPTION | WO2005052146 |
| DESCRIPTION | WO2005052161 |
| DESCRIPTION | WO2006027086 |
| DESCRIPTION | WO2006032327 |
| DESCRIPTION | WO2006032397 |
| DESCRIPTION | WO2006045275 |
| DESCRIPTION | WO2008017570 |
| DESCRIPTION | WO2008087497 |
| DESCRIPTION | WO2008141880 |
| DESCRIPTION | WO2009021867 |
| DESCRIPTION | WO2009087524 |
| DESCRIPTION | WO2009090576 |
| DESCRIPTION | WO2009107091 |
| DESCRIPTION | WO2009111258 |
| DESCRIPTION | WO2009132870 |
| DESCRIPTION | WO2009141173 |
| DESCRIPTION | WO2009148983 |
| DESCRIPTION | WO2010099997 |
| DESCRIPTION | WO2010102861 |
| DESCRIPTION | WO2010148624 |
| DESCRIPTION | WO2010151906 |
| DESCRIPTION | WO2011011799 |
| DESCRIPTION | WO2011047987 |
| DESCRIPTION | WO2012054058 |
| DESCRIPTION | WO2012054820 |
| DESCRIPTION | WO2012119859 |
| DESCRIPTION | WO2013142495 |
| DESCRIPTION | WO2013151970 |
| DESCRIPTION | WO2014029479 |
| DESCRIPTION | WO2016005338 |
| DESCRIPTION | WO2018085311 |
| DESCRIPTION | WO2019007636 |
| DESCRIPTION | WO2019008036 |
| DESCRIPTION | WO2019075149 |
| DESCRIPTION | WO2020016097 |
| DESCRIPTION | WO2020058088 |
| DESCRIPTION | WO8906270 |
| DESCRIPTION | WO8906279 |
| DESCRIPTION | WO8909259 |
| DESCRIPTION | WO9116422 |
| DESCRIPTION | WO9205249 |
| DESCRIPTION | WO9217517 |
| DESCRIPTION | WO9219708 |
| DESCRIPTION | WO9219709 |
| DESCRIPTION | WO9318140 |
| DESCRIPTION | WO9324618 |
| DESCRIPTION | WO9401541 |
| DESCRIPTION | WO9425578 |
| DESCRIPTION | WO9425583 |
| DESCRIPTION | WO9506720 |
| DESCRIPTION | WO9510602 |
| DESCRIPTION | WO9514783 |
| DESCRIPTION | WO9522615 |
| DESCRIPTION | WO9526397 |
| DESCRIPTION | WO9530744 |
| DESCRIPTION | WO9535381 |
| DESCRIPTION | WO9600292 |
| DESCRIPTION | WO9612012 |
| DESCRIPTION | WO9613580 |
| DESCRIPTION | WO9627002 |
| DESCRIPTION | WO9629397 |
| DESCRIPTION | WO9704079 |
| DESCRIPTION | WO9707202 |
| DESCRIPTION | WO9812307 |
| DESCRIPTION | WO9815257 |
| INTERNATIONAL-SEARCH-REPORT | GB1010588 |
| INTERNATIONAL-SEARCH-REPORT | GB1451228 |
| INTERNATIONAL-SEARCH-REPORT | GB1494760 |
| OPPOSITION | DE2800519 |
| OPPOSITION | EP1236793 |
| OPPOSITION | US2008105847 |
| OPPOSITION | US2014116690 |
| OPPOSITION | US4295980 |
| OPPOSITION | WO2015130669 |
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 |
|---|---|
| DESCRIPTION | - DARTOIS et al., Biochemica et Biophysica Acta, (19930000), vol. 1131, pages 253 - 360 |
| DESCRIPTION | - Energy Environ. Sci., (20190000), vol. 12, page 2717 |
| DESCRIPTION | - HOASSAIN M.K et al., ACS Omega, (20180000), vol. 3, pages 7046 - 7060 |
| DESCRIPTION | - H.W. STACHE, Surfactant Science Series, Marcel Dekker, (19960000), vol. 72 |
| DESCRIPTION | - SCHWARTZPERRY, Surface Active Agents, Interscience, (19490000), vol. 1 |
| DESCRIPTION | - SIEZEN et al., Protein Engng., (19910000), vol. 4, pages 719 - 737 |
| DESCRIPTION | - SIEZEN et al., Protein Science, (19970000), vol. 6, pages 501 - 523 |
| DESCRIPTION | - "Synthesis, Properties, and Applications", Biobased Surfactants, AOCS press, (20190000), pages 287 - 301 |
| DESCRIPTION | - Wat. Res., vol. 29, no. 5, pages 1301 - 1307 |
| INTERNATIONAL-SEARCH-REPORT | - QUACK J M ET AL, "Sekundà re Alkansulfonate Entwicklungen auf dem Gebiet der sekundà ren Alkansulfonate", TENSIDE,, (19851101), vol. 22, no. 6, pages 281 - 289, XP001390743 [A] 1-15 * the whole document * |
| INTERNATIONAL-SEARCH-REPORT | - BARAKAT Y., "The Phase Behavior of Simple Salt-Tolerant Sulfonates", SOCIETY OF PETROLEUM ENGINEERS JOURNAL, US, (19831201), vol. 23, no. 6, doi:10.2118/10679-PA, ISSN 0197-7520, pages 913 - 918, XP055778374 [A] 1-15 * page 913, column rh, line 33 - page 914, column lh, line 7 * |
| OPPOSITION | - Anonymous, "Secondary Alkane Sulfonate (SAS) (CAS 68037-49-0); Version 1", HERA (Human & Environmental Risk Assessment on ingredients of household cleaning products), HERA (Human & Environmental Risk Assessment on ingredients of household cleaning products), URL: https://www.heraproject.com/files/44-f-sas_hera_ra_version1_2005marchnrev.pdf, XP093262480 |
| OPPOSITION | - "A traditional speciality for innovative cleaners, Hostapur SAS", A traditional specialty for innovative cleaners, Hostapur SAS, CLARIANT, DE, DE , (20000501), pages 1 - 44, XP002684918 |
| OPPOSITION | - D2a - Auszug aus der REACH ECHA-Datenbank mit REACH Daten für „secondaryalkane sulphonate, sodium salt“; CAS Nr. 97489-15-1; zu beschaffen über https://chem.echa.europa.euZ100.097.277/identity?searchText=SAS |
| OPPOSITION | - D2 - REACH Datenblatt „secondary alkane sulphonate, sodium salt“; CAS Nr. 97489-15-1 (lUCLID-Format) gemäß REACH Registrierung am 30.09.2010 |
| OPPOSITION | - J. M. Quack; DI M. Trautmann, "Sekundäre Alkansulfonate Entwicklungen auf dem Gebiet der sekundären Alkansulfonate", Tenside, (19851101), vol. 22, no. 6, pages 281 - 289, XP001390743 |
| OPPOSITION | - Smulders, Eduard; Rähse, Wilfried, "Chapter 3: Detergent Ingredients ", Smulders, Eduard; Rähse, Wilfried, Eduard Smulders, Laundry Detergents, Wiley-VCH Verlag GmbH & Co. KGaA, (20020101), pages 38 - 97, ISBN 3-527-30520-3, XP009560216 |
| OPPOSITION | - Baena-Nogueras Rosa María; González-Mazo Eduardo; Lara-Martín Pablo A., "Determination and occurrence of secondary alkane sulfonates (SAS) in aquatic environments", ENVIRONMENTAL POLLUTION, BARKING, GB, GB , (20130217), vol. 176, doi:10.1016/j.envpol.2013.01.020, ISSN 0269-7491, pages 151 - 157, XP028997398 |
| OPPOSITION | - Baena-Nogueras Rosa María, Rojas-Ojeda Patricia, Sanz José Luis, González-Mazo Eduardo, Lara-Martín Pablo A., "Reactivity and fate of secondary alkane sulfonates (SAS) in marine sediments", ENVIRONMENTAL POLLUTION, BARKING, GB, GB , (20140601), vol. 189, doi:10.1016/j.envpol.2014.02.019, ISSN 0269-7491, pages 35 - 42, XP093262460 |
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