Has anyone ever filed a patent application with the U.S. Patent and Trade Office? I filed a preliminary patent application (gives me a year to file the real thing but uses the preliminary file date) recently electronically, and it seemed to go through but I haven't received any kind of email notication. I filed a trademark application last week and received a notification a few days later... If you've filed a patent electronically or otherwise, how long did it take to receive notification?

