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Extract from the Register of European Patents

EP About this file: EP0025551

EP0025551 - Use of (meth)acrylic acid and maleic acid copolymers as incrustation inhibitors in detergents [Right-click to bookmark this link]
Former [1981/12]	Use of (meth)acrylic acid and maleinic acid copolymers as incrustation inhibitors in detergents
	[1982/38]
Status	Patent maintained as amended Status updated on 20.11.1992 Database last updated on 29.03.2025
Most recent event Tooltip	05.10.2005	Change: Appeal number
Applicant(s)	For all designated states BASF Aktiengesellschaft Carl-Bosch-Strasse 38 67063 Ludwigshafen / DE
	[N/P]
Former [1981/12]	For all designated states BASF Aktiengesellschaft Carl-Bosch-Strasse 38 D-67063 Ludwigshafen / DE
Inventor(s)	01 / Trieselt, Wolfgang, Dr. Alwin-Mittasch-Platz 1 D-6700 Ludwigshafen / DE
	02 / Perner, Johannes, Dr. Kiesstrasse 19 B D-6730 Neustadt 1 / DE
	03 / Hettche, Albert, Dr. Kleiststrasse 12 D-6711 Hessheim / DE
	04 / Denzinger, Walter Wormser Landstrasse 65 D-6720 Speyer / DE
	05 / Ley, Gregor, Dr. In den Trankstuecken D-6719 Wattenheim / DE
	06 / Hartmann, Heinrich, Dr. Weinheimer Strasse 46 D-6703 Limburgerhof / DE
	[1981/12]
Application number, filing date	80105230.9	03.09.1980
	[1981/12]
Priority number, date	DE19792936984	13.09.1979 Original published format: DE 2936984
	[1981/12]
Filing language	DE
Procedural language	DE
Publication	Type:	A1 Application with search report
	No.:	EP0025551
	Date:	25.03.1981
	Language:	DE
	[1981/12]
	Type:	B1 Patent specification
	No.:	EP0025551
	Date:	22.09.1982
	Language:	DE
	[1982/38]
	Type:	B2 New European patent specification
	No.:	EP0025551
	Date:	07.01.1993
	Language:	DE
	[1993/01]
Search report(s)	(Supplementary) European search report - dispatched on:	EP	04.12.1980
Classification	IPC:	C11D3/37, C08L33/00, C08L35/00	[1981/12]
	CPC:	C11D3/3761 (EP)
Designated contracting states	AT, BE, DE, FR, GB, IT, NL, SE [1981/24]
Former [1981/12]	AT, BE, CH, DE, FR, GB, IT, LI, LU, NL, SE
Title	German:	Verwendung von (Meth)acrylsäure-Maleinsäure-Copolymerisaten als Inkrustierungsinhibitoren in Waschmitteln	[1981/12]
	English:	Use of (meth)acrylic acid and maleic acid copolymers as incrustation inhibitors in detergents	[1982/38]
	French:	Utilisation de copolymères d'acide (méth)acrylique et d'acide maléique comme inhibiteurs d'incrustation dans des produits de lavage	[1982/38]
	Former [1981/12]	Use of (meth)acrylic acid and maleinic acid copolymers as incrustation inhibitors in detergents
	Former [1981/12]	Utilisation de copolymères d'acide (méth)acrylique et d'acide maléinique comme inhibiteurs d'incrustation dans des produits de lavage
Examination procedure	06.01.1981	Despatch of communication of loss of particular rights: designated state(s) CH, LU
	16.03.1981	Loss of particular rights, legal effect: designated state(s)
	01.04.1981	Examination requested [1981/24]
	12.11.1981	Despatch of communication of intention to grant (Approval: )
	30.12.1981	Communication of intention to grant the patent
	04.02.1982	Fee for grant paid
	04.02.1982	Fee for publishing/printing paid
Opposition(s)	Opponent(s)	01 24.05.1983 14.06.1983 ADMISSIBLE Henkel Kommanditgesellschaft auf Aktien TFP / Patentabteilung D-40191 Düsseldorf / DE
		02 13.06.1983 18.07.1983 ADMISSIBLE THE PROCTER & GAMBLE COMPANY 301 East Sixth Street Cincinnati Ohio 45201 / US Opponent's representative Beil, Hans Christoph, et al, et al BEIL, WOLFF & BEIL Rechtsanwälte Postfach 80 01 40 65901 Frankfurt / DE
		03 18.06.1983 29.07.1983 ADMISSIBLE Unilever PLC Unilever House Blackfriars London EC4P 4BQ / GB Opponent's representative Lederer, Franz, et al, et al Lederer & Keller Patentanwälte Unsöldstrasse 2 80538 München / DE
		04 21.06.1983 18.07.1983 ADMISSIBLE Röhm GmbH Kirschenallee 64293 Darmstadt / DE
		[N/P]
	Former [1989/40]
	Opponent(s)	01 24.05.1983 14.06.1983 ADMISSIBLE Henkel Kommanditgesellschaft auf Aktien TFP / Patentabteilung D-40191 Düsseldorf / DE
		02 13.06.1983 18.07.1983 ADMISSIBLE THE PROCTER & GAMBLE COMPANY 301 East Sixth Street Cincinnati Ohio 45201 / US Opponent's representative Beil, Hans Chr., Dr., et al, et al BEIL, WOLFF & BEIL, Rechtsanwälte, Postfach 80 01 40 D-65901 Frankfurt / DE
		03 18.06.1983 29.07.1983 ADMISSIBLE Unilever PLC Unilever House Blackfriars London EC44BQ / GB Opponent's representative Lederer, Franz, Dr., et al, et al Lederer, Keller & Riederer Patentanwälte Prinzregentenstrasse 16 D-80538 München / DE
		04 21.06.1983 18.07.1983 ADMISSIBLE Röhm GmbH Kirschenallee D-64293 Darmstadt / DE
	Former [1983/35]
	Opponent(s)	01 24.05.1983 Henkel Kommanditgesellschaft auf Aktien TFP / Patentabteilung D-40191 Düsseldorf / DE
		02 13.06.1983 THE PROCTER & GAMBLE COMPANY 301 East Sixth Street Cincinnati Ohio 45201 / US Opponent's representative Beil, Hans Chr., Dr., et al, et al BEIL, WOLFF & BEIL, Rechtsanwälte, Postfach 80 01 40 D-65901 Frankfurt / DE
		03 18.06.1983 Unilever PLC Unilever House Blackfriars London EC44BQ / GB Opponent's representative Gambell, Derek, et al, et al UNILEVER PLC Patent Division Colworth House Sharnbrook GB-Bedford MK44 1LQ / GB
		04 21.06.1983 Röhm GmbH Kirschenallee D-64293 Darmstadt / DE
	Former [1983/34]
	Opponent(s)	01 24.05.1983 Henkel Kommanditgesellschaft auf Aktien TFP / Patentabteilung D-40191 Düsseldorf / DE
		02 13.06.1983 ADMISSIBLE THE PROCTER & GAMBLE COMPANY 301 East Sixth Street Cincinnati Ohio 45201 / US Opponent's representative Beil, Hans Chr., Dr., et al, et al BEIL, WOLFF & BEIL, Rechtsanwälte, Postfach 80 01 40 D-65901 Frankfurt / DE
		04 21.06.1983 ADMISSIBLE Röhm GmbH Kirschenallee D-64293 Darmstadt / DE
	Former [1983/32]
	Opponent(s)	01 24.05.1983 ADMISSIBLE Henkel Kommanditgesellschaft auf Aktien TFP / Patentabteilung D-40191 Düsseldorf / DE
	01.08.1983	Invitation to proprietor to file observations on the notice of opposition
	02.12.1983	Reply of patent proprietor to notice(s) of opposition
	20.12.1983	Communication of observations of patent proprietor (Time limit: M06)
	22.06.1984	Reply of parties involved to observations of patent proprietor
	20.09.1984	Despatch of a communication from the opposition division (Time limit: M02)
	17.12.1984	Reply to a communication from the opposition division
	27.02.1985	Despatch of communication that the patent will be revoked
	04.11.1988	Despatch of a communication from the opposition division (Time limit: M03)
	04.02.1989	Reply to a communication from the opposition division
	09.06.1989	Despatch of a communication from the opposition division (Time limit: M02)
	29.07.1989	Reply to a communication from the opposition division
	22.01.1990	Despatch of interlocutory decision in opposition
	06.05.1992	Legal effect of interlocutory decision in opposition
	11.08.1992	Despatch of communication that the patent will be maintained as amended
	06.10.1992	Fee for printing new specification paid
Appeal following opposition	22.01.1990	Appeal received No. T0252/90
	23.03.1990	Statement of grounds filed
	06.05.1992	Result of appeal procedure: appeal of the opponent was rejected
	27.04.1985	Appeal received
	29.06.1985	Statement of grounds filed
	06.05.1992	Date of oral proceedings
	13.05.1992	Minutes of the oral proceedings despatched
Fees paid	Renewal fee
	16.09.1982	Renewal fee patent year 03
	Penalty fee
	Penalty fee Rule 85a EPC 1973
	03.10.1980	CH M02 Not yet paid
	03.10.1980	LU M02 Not yet paid
Opt-out from the exclusive Tooltip competence of the Unified Patent Court	See the Register of the Unified Patent Court for opt-out data
	Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Documents cited:	Search	DE2236870 [ ] (UNILEVER NV);
		DE2243282 [ ] (HENKEL & CIE GMBH);
		DE2417172 [ ] (PROCTER & GAMBLE);
		DE2650281 [ ] (PROCTER & GAMBLE);
		DE2745275 [ ] (UNILEVER NV);
		DE2646803 [ ] (BASF AG);
		EP0000215 [ ] (PROCTER & GAMBLE [US], et al)

The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.

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Terms of use
24.2.32; 35p