The story
The firm was founded on 1 April 1949 by Alfred Gleiss, a lawyer in Stuttgart, as an office for decartelisation and competition issues in Stuttgart. In 1956, Helmuth Lutz joined the firm, shortly after the arrival of Christian Hootz and Martin Hirsch. Since 1962, the firm has borne the official name Gleiss Lutz Hootz Hirsch (short: Gleiss Lutz), which is still valid today.
From Wikipedia’s article on Gleiss Lutz, shared under CC BY-SA 4.0.4