I have read quite a few posts with this issue. The launcher has been resized to nothing and will not maximize or resize from the toolbar. The following procedures allowed me to bring up the launcher in maximize mode so I could patch:
1. CTRL+ALT+DEL to bring up task manager.
2. In the Applications Tab, right click on Star Trek Online.
3. Select Maximize from the pop-up menu.
4. Log in and patch launcher.
Once patching was complete, I left STO and re-ran the launcher application - it was back to normal size.
Hope this helps some of you out there. Odd that the Champions Online launcher was affected as well.