Depends on what you mean.

As I said in the GP, under the Berne Convention, copyright exists in a work when it is created. There is no paperwork required. For example, thousands of people hold copyright to portions of Wikipedia. The Wikimedia Foundation makes the license, and the terms under which contributions are accepted, clear, and that's it.

But if you want to be dividing up money, then you'll need to carefully consider the issues of whether the licensing terms would hold up in courts in various jurisdictions, how to prove at a later date that authors did indeed agree to the license terms, and how the licensing terms might be changed, if necessary, without all authors needing to be contacted individually. For that, you need to talk to a real lawyer (which, once again, I am not).

And then there is the issue of just how you're going to collect money and get it to all those people ....

The work required to license either isn't difficult. Arguing back and forth on terms is how the legal bills add up. It all boils down to how much money must be paid.

Your product is mostly the underlying asset, not the streamlined process.

Remember, every licensee of the copyright or trademark will be selling the same thing (mostly). How do they differentiate themselves in the market? Probably price, in a multitude of ways.

Check out http://www.uspto.gov/trademarks/teas/initial_app.jsp

At the bottom, Collective Trademark/Servicemark Application

You can register both individually, and then execute a licensing contract for each afterward. You sign and the new party signs. Terms of the agreement ae mostly up to both of you.

Trademarks allow for extra assignment recording rights. You can check the USPTO website for those or contact an attorney for specifics.

Basically, you creat a license, like GPL or a CC license or a custom one (how most are done).

You can charge a flat fee, ongoing royalties, or other. Whatever fits your goals and the market.

atty here btw.