Thanks to jameshart's list, and the search you provided I found:

- Windows: No Microsoft needed https://tsdr.uspto.gov/#caseNumber=74090419&caseSearchType=U... - Microsoft Teams: Needs Microsoft https://tsdr.uspto.gov/#caseNumber=87687687&caseSearchType=U... - Nothing for Word - Microsoft 365: https://tsdr.uspto.gov/#caseNumber=87640393&caseSearchType=U... - No Microsoft Office, but Office 365: https://tsdr.uspto.gov/#caseNumber=85387679&caseSearchType=U...

Microsoft’s own list (https://query.prod.cms.rt.microsoft.com/cms/api/am/binary/RW... - PDF warning) - while it explicitly says it is non-exhaustive - doesn’t appear to claim ‘Word’ or any variant of it - only the word icons and logos. From your list it lists Microsoft 365 and Microsoft Teams and Office 365, but not Microsoft Office.