Great Britain. Patent Office (Corporate Name)

Its The official journal of the Patent Office, Apr. 1, 1884.

Its Annual report and accounts, 1991/92: cover (The Patent Office; an executive agency of the Department of Trade and Industry)

UK Intellectual Property Office Annual report and accounts, 2006-2007: t.p. (UK Intellectual Property Office) p. 6 (The Patent Office became the UK Intellectual Property Office (UK-IPO) on Apr. 2, 2007)

National Archives Discovery website, viewed 28 April 2021: under Records of the Patent Office (the Patents Designs and Trade Marks Act 1883 transferred responsibility for the registration of designs and trade marks from the patent commissioners to the Patent Office, which until the 1920s was formally known as the Patents, Designs and Trade Marks Office)

Wikipedia, viewed 28 April 2021: under Intellectual Property Office, United Kingdom (Office of the Commissioners for Patents was established by the Patents Law Amendment Act 1852 and opened on 1 October that year; forerunner of the Patent Office, which was created later, along with the office of the comptroller under the Patents, Designs and Trade Marks Act 1883 (s 82), and based in the Chancery Lane area of London; from its early days, the Patent Office was based in the Chancery Lane area of London, where it eventually spread to fill the area between Furnival Street and Southampton Buildings; principal entrance was at 25 Southampton Buildings, where a purpose-built headquarters was constructed in 1899-1902; in 1991, the Patent Office moved to Newport, South East Wales, where the IPO headquarters remains to this day)

Great Britain. Commissioners of Patents. The Commissioners of Patents' journal, Dec. 31, 1883.