[TomAnthony]

Legitimate question, from someone who had just built an app (that will have a cost) that is a helper to Dropbox and has 'Dropbox' in the name.

Where do you think the line is? There are several apps on the Mac app store that have 'Dropbox' in their name and are charged. Is the difference they they are all 'sidecar's that rely on you have Dropbox?

[kevin_thibedeau]

Without a license agreement they're all trademark violations. Pick a non-confusing unique name to save some trouble.

[jonny_eh]

Apparently Box is not confusing with Dropbox.

[papercrane]

Box pre-dates Dropbox by a couple of years.

[slig]

I wonder why they didn't go after a competitor named "Dropbox".

[rnotaro]

Some negotiations probably happened behind the scenes.

BOX, INC. v. DROPBOX, INC. | United States Patent and Trademark Office [1]

[1] https://ttabvue.uspto.gov/ttabvue/v?pno=91200450&pty=OPP&eno...