Copyright Assignment

Exhibit 10.8

COPYRIGHT ASSIGNMENT

This Copyright Assignment is delivered pursuant to the Closing under that certain Purchase Agreement (the " Agreement") dated as of December 18, 2003, between Aether Systems, Inc., as the " Seller", and TSYS Acquisition Corp., as the " Purchaser". Capitalized terms used in this Copyright Assignment have the same meanings given to them in the Agreement.

The Seller has delivered this instrument signed by the Seller to enable the Purchaser to file it with any appropriate governmental agency to indicate ownership of Intellectual Property described below and for the other purposes set forth in this instrument. This instrument supplements and is in addition to all other rights of the Purchaser under the Agreement and other instruments of transfer delivered in connection with the Agreement.

For good and valuable consideration, receipt of which the Seller acknowledges, and by signing and delivering this instrument, the Seller sells, assigns, transfers, conveys, and delivers to the Purchaser all of the Seller's right, title, and interest in and to:

(a) the registered and unregistered copyrights and applications for registration of copyrights specifically listed in Annex A to this Copyright Assignment; and

(b) the following properties and rights with respect to all copyrights and applications so listed in Annex A :

(1) all works of authorship claimed or described in the copyrights together with all rights to publish, reproduce, display, transmit, adopt, sell, prepare derivative works, distribute, perform or otherwise make use of the same;

(2) any and all registered copyrights and copyright applicat ...