Yes. Lisa has a defense. Actually a good one.
You may be surprised to learn, that under certain circumstances, a trespasser can come onto your land, occupy it, and gain legal ownership of it. The legal term for this is "adverse possession."
Through adverse possession, a trespasser can gain ownership of just a few feet of property or hundreds of acres. And the trespasser doesn’t need to intend to take the land by adverse possession. Sometimes it happens through an honest mistake—for example, Lisa may have relied upon a faulty property description in a deed when building a fence on Danny's property.
By rule of continious and exclusive possesion
Lisa possessed the land exclusively (that means the trespasser cannot share possession with strangers or the owner) and without interruption for a certain period of time. (That means the trespasser cannot give up use of the property, return to it later, and try to count the time that the property was abandoned as part of the "continuous" possession time period.) The time period required varies by state and in this case it was ten years.
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