T 0170/08 (Desinfecting compositions/RECKITT BENCKISER LTD.) 26-02-2010

I. The appellant lodged an appeal against the decision of the examining division to refuse the European patent application No. 02 715 585.2

II. The examining division considered that the main and single pending request before it did not fulfil the requirements of Article 54 EPC in view of the disclosure of the documents D1 (EP-A-848 907) and D2 (US-A-4 678 658). Moreover, claim 2 of this request lacked clarity (Article 84 EPC).

III. Against this decision, the appellant filed an appeal and submitted its statement setting out the grounds of appeal. Annexed to this statement, the appellant filed a revised main request and an auxiliary request. It argued as follows:

- It was believed that the main and the auxiliary requests fulfilled the requirements of Article 123(2) EPC. The amount of alcohol had been limited to 50 to 70 weight percent. Claim 1 of the auxiliary request had been amended so that the alcohol of the claimed composition was ethanol.

Claim 1 of the main request read as follows:

"1. A composition for sanitizing and/or disinfecting a hard surface comprising as ingredients essential to providing a sanitizing and/or disinfecting effect sufficient to exhibit a polio virus log reduction of at least 1:

an alcohol selected from the group consisting of methanol, ethanol, n-propanol, isopropanol, n-butanol, benzyl alcohol, and mixtures thereof which is present in an amount of from 50 to 70 weight percent;

an effective amount of a pH modifying agent selected from: alkali metal hydroxides, ammonium hydroxide, Na4EDTA; tri- or tetraammonium ethylenediaminetetraacetate, tri- or tetrapotassium ehtylenediamineteataacetate, alkali metal carbonates, hydrogen carbonates, alkali metal salts of borate and alkali metal salts of phosphates, such that the pH range of the composition is from 10.0 to 12.0;

and water;

wherein the composition optionally further comprises a component selected from the group consisting of antimicrobials, corrosion inhibitors, perfumes, perfume carriers, solvents, surfactants, propellants, pH buffers, fungicides, film-forming polymers, and anti-oxidants."

Claim 3 of the main request read as follows:

"3. The composition according to claim 2, wherein ethanol is the sole alcohol present in the composition."

Claim 1 of the auxiliary request read as follows:

"1. A composition for sanitizing and/or disinfecting a hard surface comprising as ingredients essential to providing a sanitizing and/or disinfecting effect sufficient to exhibit a polio virus log reduction of at least 1:

an alcohol present in an amount of from 50 to 70 weight percent wherein ethanol is the sole alcohol present in the composition;

an effective amount of a pH modifying agent selected from: alkali metal hydroxides, ammonium hydroxide, Na4EDTA; tri- or tetraammonium ethylenediaminetetraacetate, tri- or tetrapotassium ehtylenediamineteataacetate, alkali metal carbonates, hydrogen carbonates, alkali metal salts of borate and alkali metal salts of phosphates, such that the pH range of the composition is from 10.0 to 12.0;

and water;

wherein the composition optionally further comprises a component selected from the group consisting of antimicrobials, corrosion inhibitors, perfumes, perfume carriers, solvents, surfactants, propellants, pH buffers, fungicides, film-forming polymers, and anti-oxidants."

IV. In the annex to the summons to oral proceedings, the board raised as a preliminary opinion the following objections under Article 123(2) EPC:

Main request - Added matter

a) Claim 1 of the main request contains the expression "as ingredients essential to providing a sanitizing and/or disinfecting effect sufficient to exhibit a polio virus log reduction of at least 1". This expression has apparently no counterpart in the description as originally filed.

b) The technical feature "to 100% weight percent" after the word "water" in the claimed composition present in the originally filed version of the claims has now been deleted in the present main request. This contravenes the requirements of Article 123(2) EPC.

c) The expression "wherein the amount of alcohol is inversely proportional to the pH of the composition." was also deleted from the wording of the originally filed set of claims. However, this feature appears to be an essential feature of the invention (see page 4, lines 20 to 21). Such a deletion defines a new subject-matter, which is not directly and unambiguously derivable from the originally filed description.

d) Claim 3 contains the word "sole" to characterize ethanol, which excludes any other alcohol and thus describes compositions according to claim 1 containing no other alcohol. This amendment has also apparently no basis in the description as originally filed.

e) The expression in claim 5 "to achieve a polio virus reduction of at least 1" has no basis in the description as originally filed.

First auxiliary request - Added matter

The observations under points a) to e) are also relevant for this request.

V. The appellant did not take a position in writing on the observations of the board.

VI. Oral proceedings took place on 26 February 2010 in the absence of the appellant, who confirmed following a phone call from the Registrar that no one would attend the oral proceedings (see the Minutes).

VII. The appellant requested in writing that the decision under appeal be set aside and a patent be granted either on the basis of the main request or in the alternative on the basis of the auxiliary request, both submitted with the statement setting out the grounds of appeal.

VIII. At the end of the oral proceedings, the decision of the board was announced.