Sir Hugh Ian Lang Laddie (15 April 1946 – 28 November 2008 ) was a judge of the High Court of England and Wales.
He was a leader in the field of intellectual property law.
He was co-author of the Modern Law of Copyright (1980).Laddie was educated at Aldenham School and St Catharine's College, Cambridge.
He studied medicine but changed to law.
He became a barrister in 1969.
He is credited with having developed the idea of applying for an Anton Piller order while still a junior.
After 25 years at the bar, he was appointed a High Court judge in April 1995, and was assigned to the Chancery Division, as one of the Patents Court judges.
He resigned from his post as a judge in 2005, "because he found it boring" and felt isolated on the bench.
He became a consultant for Willoughby & Partners, a boutique law firm, UK legal arm of Rouse & Co International, a move which was criticized by some.
He was thought to be the first High Court judge to resign voluntarily in 35 years, and the first subsequently to join a firm of solicitors.
No one since Sir Henry Fisher, in 1970, had resigned from the bench.He was appointed to a Chair in Intellectual Property Law at University College London, with effect from 1 September 2006.
He founded there the Institute of Brand and Innovation Law.
The Sir Hugh Laddie chair in Intellectual Property has subsequently been established at UCL.