Legal Question in Business Law in Oklahoma

It is difficult to answer your question the way it was presented. Were you promoting your business at the event? Were you operating as a vendor who was promoting your business and you purchased a spot or location to promote your business by and through the competitor? Did you use or display their trademark at the event?

A trademark is a word, phrase, logo or other graphic symbol used by a manufacturer or seller to distinquish it product or products from those of others. It is usually affixed to a product. If the issue is just a picture of you participating or attending one of their events and you was merely a "participant" or their trademark or your attendance was not connected to your business, it is not a violation of their trademark and you are not required by law to remove the photo.