There are multiple definitions - click on the translation that matches your context.

Ersitzung (bewegliche Sachen)

Substantiv

partial

adverse possession

noun

Comparative law notes

Switzerland

Since adverse possession can also apply to personal property, this common law concept is not a poor translation for Ersitzung. As with the adverse possession of land, the requirements still apply; namely, the claimant must possess the property actually, openly, notoriously, exclusively, hostilely, under claim of right, and uninterrupted for the statutory period.

Definitions of adverse possession

English

a way of gaining title to real property from another by retaining possession for a period of time established by law and complying with certain conditions

He acquired the property through adverse possession.