O/500/19, Testplant Europe Limited, GB1602421.8, GB1602422.6, GB1602423.4 (date: 28 August 2019)
https://www.ipo.gov.uk/p-challenge-decision-results/p-challenge-decision-results-bl?BL_Number=O/500/19 Content Reproduced verbatim from the Website of the United Kingdom Intellectual Property Office (UKIPO) as permitted under their Terms of Use.