S.L. 417.1 Art. 9Presentation of claims. Article 16(3).

(1) The claims shall define the matter for which protection is sought in terms of the technical features of the invention.

Wherever appropriate, claims shall contain:

(a) a statement indicating the designation of the subject-matter of the invention and those technical features which are necessary for the definition of the claimed subject-matter but which, in combination, are part of the prior art;

(b) a characterizing portion - preceded by the expression "characterized in that" or "characterized by" - stating the technical features stated in the paragraph (a), it is desired to protect.

(2) Subject to article 18 of the Act a patent application may contain two or more independent claims in the same category (product, process, apparatus or use) where it is not appropriate, having regard to the subject-matter of the application, to cover this subject-matter by a single claim.

(3) Any claim stating the essential features of an invention may be followed by one or more claims concerning particular embodiments of that invention.

(4) Any claim which includes all the features of any other claim (dependent claim) shall contain, if possible at the beginning, a reference to the other claim and then state the additional features which it is desired to protect. A dependent claim shall also be admissible where the claim it directly refers to, is itself a dependent claim. All dependent claims referring back to a single previous claim, and all referring back to several previous claims, shall be grouped together to the extent and in the most appropriate way possible.

(5) The number of the claims shall be reasonable in consideration of the nature of the invention claimed. If there are several claims, they shall be numbered consecutively in Arabic numerals.

(6) Claims shall not, except where absolutely necessary, rely, in respect of the technical features of the invention, on references to the description or drawings. In particular, they shall not rely on such references as: "as described in part ... of the description", or "as illustrated in figure... of the drawings".