QUESTION: How do I update my address on a previously filed trademark application

ANSWER: To update your address to your trademark or service mark that you already own is very easy. you can do it online on the us patent office web site for US Patent & Trademark Office (USPTO)

http://www.uspto.gov/teas/eTEASpageE.htm.

all you need is your assigned trademark serial number from the USPTO for reference. if you dont know it, you can look on your certificate or you can look it up on the website too, just do a search for your trademark word