What LexisNexis reported
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.
The public report page used for this note does not include official UKIPO case numbers or the full decision text. Treat the invalidity, the rejected opposition, and the descriptiveness point as what LexisNexis reported until an official UKIPO decision page confirms the case numbers.
How to use a report like this
If a UK or other foreign filing turns on whether GPT is descriptive, read the office decision before you rely on a news report for the goods, the marks, or the case number. This note does not add facts the LexisNexis report did not state.