The location is cupertino, CA. Around 15 years ago, a fence on the property line between my house and my neighbor was replaced. But the new fence was installed a few inches over to my side. That neighbor sold the house to a new (current ) owner about five ago. The current is blissfully unaware of the "new" fence being in the wrong place.
Have I lost those few inches of property forever because the fence was installed in the wrong place and the new owner does not know it? Do I have any recourse?