Archroma IP GmbH Received a Patent for Acid Dyes

Archroma is a global, diversified provider of dyes and specialty chemicals serving the branded and performance textiles, packaging and paper, and coatings, adhesives and sealants markets.

In India, the Pharmaceutical business of Archroma IP GmbH is focused on Storage-stable dye solutions, Bisazo dyes and mixtures, Inkjet printing, Concentrated storage-stable aqueous optical brightening solutions.

Archroma IP GmbH filed patent application numbered 671/DELNP/2013 that is titled ACID DYES. This patent application has been granted as Patent Number 316776.

The invention covers chemical compounds. The invention relates to compounds of formula (I): R0 signifies a C1 to C4 alkyl group, R1 signifies CN or CONH2, R2 signifies a secondary or tertiary amino group, R3 signifies a secondary or tertiary amino group, BR is a bridge of the formula -A-B-A- wherein A is substituted phenyl or substituted naphthyl or unsubstituted phenyl or unsubstituted naphthyl, and B is a bivalent group of the formula -SO2-, -CONH-, -HNCO-, -SO2NH- or -HNSO2-, with the proviso that the compounds of formula (I) bear at least one anionic substituent.

During patent examination, the patent examiner raised objections under Section 3(d) of the Indian Patents Act, wherein the examiner stated that the claims 1-9 are a new form of known substance (other derivatives) in respect of the compounds disclosed by citations because no enhancement in the efficacy has been described in the description and hence, falls within the scope of Section 3(d) of the Indian Patent Act.

As a response to said objection, the applicant responded by submitting that molecular and structural components are different.

Advocate Rahul Dev is a Patent Attorney & International Business Lawyer practicing Technology, Intellectual Property & Corporate Laws. He is reachable at rd (at) patentbusinesslawyer (dot) com & @rdpatentlawyer on Twitter.

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