Mark Identification

LIGHTSTACK

Serial Number

76365194

Filing Date

Jan 30, 2002

Registration Date

Dec 21, 2004

Trademark by

CIENA CORPORATION

Classification Information

COMPUTER SOFTWARE AND HARDWARE FOR USE IN NETWORKING SWITCHING SYSTEMS

Electrical and Scientific Apparatus

MAINTENANCE SERVICES AND INSTALLATION SERVICES RELATING TO ETHERNET/GIGABIT AND/OR ETHERNET/OPTICAL NETWORKING SWITCHING SYSTEMS BOXES

Building Construction and Repair