Your presumption is incorrect about the word-term "dollar." There is no copyright nor can a copyright be issued as the word predates the formation of the United States.

Dollar is a perversion of a family name. It was associated with coins of silver that changed in weight and purity over a period of about 350 years. Started in the old kingdom of Bohemia (about where Croatia is now). Wikipedia has a nice detailed history - I'm working from memory.

The word was variously Taler, Thaler, Daler, and finally "Dollar."

About 1873 +/- the redemption of the dollar notes was changed from silver to gold. I personally believe the banksters already then had a plan. That famous "Cross of Gold" speech from Bryan who was running for president was about that act which he characterized as a crime. There is actually a youtube with that speech.