逆权管有 meaning in English

adverse possession

Adverse possession of unleased government land
逆权管有未批租政府土地
Legislative council question 6 : " adverse possession of unleased government land " by the hon patrick lau and an oral reply by the secretary for housing , planning and lands , mr michael suen , in the legislative council
立法会会议上刘秀成议员就立法会六题：逆权管有未批租政府土地的提问和房屋及规划地政局局长孙明扬的答覆