My husband and I have a corporation and are interested in starting another. Our only problem is the name of a product we want under this corp. We paid for a Comprehensive U.S. Trademark Search Report. What we found is that there is a company/business with a name that is similar. The only difference in the name is one letter spelled differently. Instead of a "S" we used a "Z". We would really like to use this name as a brand product. The products are the same, both are skateboards brands. This other company was trademarked in 1988. Should we be concered about lawsuits??? Remember, the name would be spelled different. Thanks!!!