Facebook has 269 registered trademarks
https://tmsearch.uspto.gov/bin/gate.exe
... and "Threads" ain't one of them
https://tmsearch.uspto.gov/bin/gate.exe
... and "Threads" ain't one of them
I worked at a place for six months where I worked on an impossible number of projects that were hosted on Windows particularly including the really strange such as hosted on MS Access. (Something that could work pretty well or pretty poorly depending on how it was configured.)
I'd imagine trademark search would be easier and it looks like you can get that out of a data dump just like you can for patents.
The search engine used a neural network autoencoder for "more like this" queries and did a great job if you wrote a paragraph describing your invention and want to find related inventions, both in patent and non-patent literature. If it hasn't been made obsolete by Sentence BERT, however, it soon will be.
https://mastodon.social/@UP8/media
have to do with "three-sided cards"; these have many uses not least I can throw down several of them and take a picture to show on social media.
Threads owns one for THREADS: https://tsdr.uspto.gov/#caseNumber=87522273&caseType=SERIAL_...
It covers (in Class 42): "Platform as a service (PAAS) featuring computer software platforms for use in project management and collaboration for the technology and media industries that allows organizations and users to create, upload, share, discuss, store, and search content meant for users of the platform; none of the foregoing specifically targeting decision support among healthcare professionals and facilities"