The trademark? Sure. I don’t know myself exactly, but I though WebKit had a development group. Much like the chromium project develops blink. With Apple and google respectively as project leads.I mean they do own it. You can still own an open source program or standard it doesn’t really change the actual owner. Google still owns the open source chromium for example.
Open source btw doesn’t mean open use. Lots of commercial products still in use are open source, eg Unix, but not open use.
I don’t see how one can attribute ownership to anything licensed for open use.
Maybe we’re lost on semantics? Speaking of: chromium is a browser. The engine is blink. Blink is open use. Chrome (and chromium) is a protected trademark. Safari and WebKit are protected trademarks , the code is open use.