What you're experiencing is the activation lock and it's meant to be a theft deterrent device. As such there is no user bypass.
http://www.apple.com/icloud/find-my-iphone.html
Activation Lock is designed to prevent anyone from using your iPhone, iPad, or iPod touch if you ever lose your device. It starts working the moment you turn on Find My iPhone. From then on, your Apple ID and password will be required before anyone can turn off Find My iPhone, erase your device, or reactivate it. This can help you keep your device secure, even if it’s in the wrong hands. And now it even works with your Apple Watch.
Perhaps you can use iforgot to recover and change the password
If you forgot your Apple ID password - Apple Support