The law in regard to a trespass to chattels is thus summarized in the Restatement of the Law of Torts, s. 218: "one who without consensual or other privilege to do so, uses or otherwise intentionally intermeddles with a chattel which is in possession of another is liable for a trespass to such person if,
- the chattel is impaired as to its condition, quality or value, or
- the possessor is deprived of the use of the chattel for a substantial time, or
- bodily harm is thereby caused to the possessor or harm is caused to some person or thing in which the possessor has a legally protected interest."