1. ACOVA

Serial Number: 76406001
Owner: (APPLICANT) Texas Biotechnology Corporation CORPORATION DELAWARE 7000 Fannin, Suite 1920 Houston TEXAS 77030
Filed on: 05/10/2002

2. AQOVA PHARMACEUTICALS INC.

Serial Number: 76488508
Owner: (APPLICANT) Texas Biotechnology Corporation CORPORATION DELAWARE 7000 Fannin, Suite 1920 Houston TEXAS 77030
Filed on: 02/05/2003

3. ARGATRA

Serial Number: 76081564
Owner: (APPLICANT) Texas Biotechnology Corporation CORPORATION DELAWARE 7000 Fannin, Suite 1920 Houston TEXAS 77030
Filed on: 06/30/2000

4. MOTHER NATURE'S GAS STATION

Serial Number: 76211963
Owner: (APPLICANT) Husky Oil Limited CORPORATION CANADA 707 8th Avenue S.W. Box 6525, Station D Calgary, Alberta CANADA T2P 3G7
Filed on: 02/16/2001

5. PRESELA

Serial Number: 76652181
Owner: (APPLICANT) Encysive Pharmaceuticals Inc. CORPORATION DELAWARE 4848 Loop Central Drive Suite 700 Houston TEXAS 77081
Filed on: 12/14/2005

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