TRADEMARK SECURITY AGREEMENT
This Trademark Security Agreement ("Agreement") is made as of the 29th day of October, 1999 by IGI, INC.
("Grantor"), a Delaware corporation, and successor by merger to Vineland Laboratories, Inc. having a mailing
address at Wheat Road and Lincoln Avenue, Buena, NJ 08310, and delivered to AMERICAN CAPITAL
STRATEGIES, LTD., a Delaware corporation having a mailing address at 2 Bethesda Metro Center, 14th
Floor, Bethesda, Maryland 20814 ("Lender").
A. Grantor has entered into that certain Note and Equity Purchase Agreement dated as of even date herewith
among Grantor, IGEN, Inc., ImmunoGenetics, Inc., and Blood Cells, Inc. (collectively, "Borrowers") and Lender
(as it may hereafter be supplemented, restated, amended, superseded or replaced from time to time, the
"Purchase Agreement"). Capitalized terms not defined herein shall have the meanings given to such terms in the
B. This Agreement is being executed contemporaneously with that certain Security Agreement of even date
herewith among Borrowers and Lender (as it may hereafter be supplemented, restated, amended, superseded or
replaced from time to time, the "Security Agreement"), under which, inter alia, Grantor is granting Lender a lien
on and security interest in certain assets of Grantor associated with or relating to products leased or sold or
services provided under Grantor's trademarks and the goodwill associated therewith as security for the payment
and performance of all the Obligations (as defined in the Security Agreement) of all the Borrowers, and under
which Lender is entitled to foreclose or otherwise deal with such assets, trademarks, service marks and
tradenames under the terms and conditions set forth therein.
C. Pursuant to the Security Agreement, Lender is acquiring a lien on, and security interest in, and license to use
(which license is conditioned upon the occurrence and continuance of an Event of Default) the trademarks,
service marks and