Proprietary Name Accepted - Wilate, July 24, 2007

Our STN: BL 125251/0

Octapharma Pharmazeutika Produktionsges. m.b.H
 Attention: Barbara Rangetiner, Ph.D.
 Oberlaaer Strasse 235
 A-1100 Vienna
 Austria

Dear Dr. Rangetiner:

This letter is in regard to your proposed proprietary names for Von Willebrand Factor Concentrate (Human), “WILATE” and “WILNATIV”, received on May 10, 2007.

We have considered your proposed proprietary names, "WILATE" and "WILNATIV" in consultation with CBER's Advertising and Promotional Labeling Branch (APLB) and conclude that under 21 CFR Part 201, the proposed proprietary name WILATE is acceptable and WILNATIV is not acceptable.

If you have any questions, please contact Mr. Franklin T. Stephenson, at (301) 827-3524.

Sincerely yours,

Basil Golding, M.D.
 Director
 Division of Hematology
 Office of Blood Research and Review
 Center for Biologics
 Evaluation and Research
