Once you receive a certification you own it for life. You can always claim it. Note that certifications are for specific products AND versions that will eventually go out of date. For example, I have an MCSE on Windows 2000.
I still own that certificate, but I am surely not going to advertise or use it since that it a retired technology and has little to no use in today's world.
Tim Harrington - Catapult Systems - http://HowDoUC.blogspot.com