Acts constituting conversion.
An action for conversion does not rest on knowledge or intent of the defendant. The act constituting "conversion" must be an intentional act, but does not require wrongful intent, and is not excused by care, good faith, or lack of knowledge. Fraudulent intent is not an element of conversion. The defendant is answerable for the conversion, no matter how good his intentions were, or how careful he has been, or how apparently well-founded was his belief that his tortious act was right. The existence of probable cause does not preclude liability. A person may be liable for conversion even though he was reasonably mistaken in thinking the facts to be such as would give him a legal right to the goods.
There are cases in which the defendant does not clearly appropriate the property to his own use, and in which the question whether there is a conversion therefore depends on the intent of the defendant either express or implied.
In general.
Conversion, being a wrongful act, cannot spring from the exercise of a legal right. Such acts include the right of execution on a legal judgment or contesting rights under a contract. The general rule is that there is no conversion until some act is done which is a denial or violation of the plaintiff's dominion over or rights in the property. To constitute a conversion of a chattel, there must be an unauthorized assumption of the right to possession or ownership. The act must have the essence of a tort.
Depriving owner of possession.
The exercise of ownership over property may take a number of forms. All that is required is that the defendant exercise control over the chattel in a manner inconsistent with the plaintiff's right of possession. The gist of a conversion is not the acquisition of the property by the wrongdoer, but the wrongful deprivation of another's property which the owner is entitled to possess.
Receipt of property.
A person who accepts the possession of personal property from one not authorized to transfer it may be regarded as a converter. The Restatement (Second) of Torts is in accord with this concept, stating that one who receives possession of a chattel from another with the intent to acquire for himself or a third person a proprietary interest in the chattel which the other has not the power to transfer is subject to liability for conversion to a third person then entitled to the immediate possession of the chattel.
