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Part-I - Controller General of Patents Designs and Trademarks

Part-I - Controller General of Patents Designs and Trademarks

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(12) PATENT APPLICATION PUBLICATION (21) Application No.1509/CHENP/2012 A<br />

(19) INDIA<br />

(22) Date <strong>of</strong> filing <strong>of</strong> Application :20/02/2012 (43) Publication Date : 21/06/2013<br />

(54) Title <strong>of</strong> the invention : PREPARATION OF SITAGLIPTIN AND SALTS THEREOF<br />

(51) International classification :C07D487/04<br />

(31) Priority Document No :2090/CHE/2009<br />

(32) Priority Date :28/08/2009<br />

(33) Name <strong>of</strong> priority country :India<br />

(86) International Application No<br />

Filing Date<br />

(87) International Publication No : NA<br />

(61) Patent <strong>of</strong> Addition to Application<br />

:NA<br />

Number<br />

:NA<br />

Filing Date<br />

(62) Divisional to Application Number<br />

Filing Date<br />

:PCT/US2010/046938<br />

:27/08/2009<br />

:NA<br />

:NA<br />

(71)Name <strong>of</strong> Applicant :<br />

1)Dr. Reddys Laboratories Limited<br />

Address <strong>of</strong> Applicant :Dr. Reddys Laboratories Limited 7-<br />

1-27 Ameerpet Hyderabad Andhra Pradesh -500 016. India<br />

2)Dr.Reddys Laboratories Inc.<br />

(72)Name <strong>of</strong> Inventor :<br />

1)Rakeshwar B<strong>and</strong>ichhor<br />

2)Nagaraju Gudimalla<br />

3)Namrata Dwivedi<br />

4)Chetluru Kiran Kumar<br />

5)Gade Srinivas Reddy<br />

6)Muvva Venkateswarlu<br />

7)Dr. Bindu Srivastava<br />

(57) Abstract :<br />

Processes for preparing sitagliptin <strong>and</strong> its pharmaceutically acceptable salts <strong>and</strong> process intermediates.<br />

No. <strong>of</strong> Pages : 30 No. <strong>of</strong> Claims : 15<br />

The Patent Office Journal 21/06/2013 13918

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