Yes there are so many features or UI designs that are taken from each other.
But Microsoft will not bring "pattern lock" to Windows Phone. No, they will never.
If they will, every Android user after looking at someone's WP will say "they also stole this feature" etc etc.
I don't want to face such a situation
They might bring some new security features for unlocking the device.
They have to innovate :/
e.g. The new cursor navigation button in keyboard for W10 for phones is something innovative and required too