A specification which described a process in a manner clear and intelligible to men of education and technical knowledge of the subject, and capable of giving instructions for the making of the machines. Held to be sufficient publication to invalidate a subsequent patent for the same process.
Where an electric machine was constructed and set up in the works of general engineers, who employed it on one occasion for photographic purposes, and on another occasion to light apparatus with which they were making experiments for their ordinary business, that was held to be sufficient prior public use to invalidate a later patent for a machine of the same type.
Judges:
Lord Chancellor (Halsbury), Lord Watson, Lord Herschell, Lord Macnaghten, and Lord Field
Citations:
[1892] UKHL 21, 30 SLR 21
Links:
Jurisdiction:
Scotland
Intellectual Property
Updated: 11 May 2022; Ref: scu.634555