I am a small business owner that created a consumer expo eight years ago. Another expo was created in a neighboring state and they plagiarized my marketing materials, ideas, concepts, etc. and are using them, verbatim, for their expo. Their event is in two weeks so a cease and desist would not mean anything at this point. Is it possible to ask for financial compensation based off of their sales due to the fact that their entire event is in essence, my event?
Side note: I have email correspondence, website screen shots, event program, etc. to strongly support my case.
The concept and ideas for an expo are generally not protected. Copyright, however, may protect the written marketing materials you created -- as long as you were the original author (with proof) and you can show that the materials in use by the new expo creators are substantially similar to (or, preferably, verbatim copies of) your original materials. You should consult with an experienced copyright litigator ASAP, and you may need to look outside Ohio. The Copyright Act has very strong remedies, but you need a thorough analysis from someone with experience before going any further.
Ideas, concepts, etc. are NOT protectible in the absence of a contract such as a non-disclosure agreement or implied contract for compensation. But the EXPRESSIONS of ideas, whether registered for copyright or not, may be protectible under copyright law if those expressions are novel enough, and the bar for hos much originality one needs to qualify for a copyright os quite low.
Here's your biggest problem: not having these expressions registered for copyright means you wouldn't be entitled to STATUTORY damages or your legal fees, just your ACTUAL damages. And what would those be? How much of their expo's income is based on "your" materials?
You need to see your own copyright litigator ASAP to explore the details of your situation.
I doubt that your claims are worth very much. Our intellectual property laws do not protect ideas---they protect tangible inventions, or works of authorship, art, music, film, theater, painting, books etc. You might have some claims for copyright infringement, but you can't bring those claims unless you have registered your works with the U.S. copyright office---and nothing in your question indicates that did so. Since you did not register within three months of publication or your original works, you have given up your right to pursue statutory damages and attorneys fees, and you left with a weak case where you would seek profits attributable to the specific copyrighted works---but this would probably be only a small portion of the profits. Further, you might be able to claim lost profits, but you would have to show they are attributable to the specific copyrighted works rather than your general idea. In short, these cases seldom result in any significant financial recovery---but if you want to invest the resources as a matter of principle, please hire one of us. Our fees will probably be higher than the value of the case but justice might prevail,