Intellectual property is a right in personam: an infringement case would be brought by the rightsholder against the infringer.

in personam, in rem and limitation on the types of cases a court can hear

rights against a particular individual

In personam is a Latin term meaning "directed toward a particular person". In a lawsuit in which the case is against a specific individual, the court must have in personamjurisdiction over that person in order to try the case.

Yes. Judgement in rem seldom sets precedent which is applicable to all judgement.

Judgement in personam is always directed to particular person or persons whereas judgement in rem relates to a particular subject or theme. This particular subject or theme may affect a lot persons in their personal capacity. Therefore, any remark made by court in the form of judgement in rem shall always supercede judgement in personam.