Free Complaint - District Court of Delaware - Delaware

Case 1 :05-cv-00562-JJF Document 1-3 Filed 08/O3/2005 Page 1 of 1
UNITED STATES PATENT AND TRADEMARK OFFICE
CERTIFICATE EXT ENDING PATENT TERM
UNDER 35 U.S.C. § l56
PATENT NO. 4,626,538
ISSUED December 2, 1986
INVENTOR John P. Dusza, et al.
PATENT OWNER Wyeth
PRODUCT Sonata® (zaleplon)
This is to certifytbat an application under 35 U.S.C. § 156 has been filed in the United
States Patent and Trademark Oiiee, requesting extension of the term of U.S. Patent
No. 4,626,533 based upon the regulatory review ofthe product Sonata® (miepton) by the
Food and Drug Administration. Since it appears that the requirements ofthe law have
been met, this certificate extends the term ofthe patent for the period of
1,810 days
50111 June 23, 2003, the original expiration date ofthe patent, subject to the payment of
maintenance fees as providedby law, with al} rights pertaining thereto as provided by
35 U.S.C. § l56(b).
I I have caused the seal of t · A United States Patm and
J`; _;é·‘” · ‘ _ ;_
· demark Ofhce to •¤ Hixcd this ;1;_h__@ of func 2003
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Under S€CfCf. - O • n v ‘ " A · ntdicctuai Property and
¥;.,3j’?£_E__ in __ _ _ ~·q;g•·•·
-~@§·%§‘,_ Director of the United States Patent and Trademark Office