pre-existing interests

"pre-existing interests" means all interests, rights, titles and estates (not being interests, rights, titles or estates vested in the Yang di-Pertua Negeri or the Government of the State) subsisting immediately before the appointed day in any land in the State, including any title therein acquired by adverse possession or operation of law or under any unregistered pre-existing deed;
ACT 518 - NATIONAL LAND CODE (PENANG AND MALACCA TITLES) ACT 1963 (Revised 1994)
4. Interpretation.