i don't see existing intellectual property as a big concern for libra. they've got much bigger problems.
Well, this did happen, but I'm not sure what happened with it:
According to a local media report, Libra is a digital insurance company which entered the market more than a year ago and was founded by Eti Eliashkov. Commenting on the matter, the firm said in a statement:
One of the innovations that Libra brought was the creation of a digital currency, Libra, which was accumulated in a digital wallet that the company creates for its policyholders. […] Libra owns all the rights over the trademark “Libra”. The trademark is the insurance company’s brand identity card.
I do agree it's the least of their problems though, if it's a problem at all lol.
As for the topic itself, this (from the same article) may be relevant:
In response, Yoav Oestreicher, a legal representative of Facebook in Israel, said that the Libra trademark is owned by and refers to the Libra Association, a Facebook-controlled and non-profit organization in Switzerland.