The LexisNexis IP item, published 22 September 2026, states that the UKIPO invalidated the GPT and ChatGPT trade marks. It also states that the UKIPO rejected OpenAI's opposition to ChainGPT, and that the office treated GPT as descriptive for AI software. This is a UK matter, reported as a foreign office decision.
UK / foreign
LexisNexis reports the UKIPO invalidated GPT and ChatGPT marks
UK and foreign: LexisNexis IP reporting dated 22 September 2026 says the UK Intellectual Property Office invalidated the GPT and ChatGPT trade marks and rejected OpenAI's opposition to ChainGPT, treating GPT as descriptive for AI software. This note follows that report.
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