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John of Utynam is the recipient of the first known English patent, granted in 1449 by King Henry VI. John was a master glass-maker from Flanders who came to England to make the windows for Eton College. The patent granted him a 20-year monopoly on the making of stained glass.

The Republic of Venice had begun issuing patents to glass-makers in the early 1420s.

References

1. "Patent History | The Engines of Our Ingenuity". engines.egr.uh.edu. Retrieved 7 November 2024.
2. Zeidman, Bob (28 April 2011). The Software IP Detective's Handbook: Measurement, Comparison, and Infringement Detection. Prentice Hall Professional. p. 80. ISBN 978-0-13-703579-3. Retrieved 7 November 2024.

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