Generally, you should not use someone else’s trademark without authorization. However, the law allows for certain “fair” uses of trademarks where “the use of the name, term, or device is a use … of the party’s individual name in his own business, or of the individual name of anyone in privity with such party, or of a term or device which is descriptive of and used fairly and in good faith only to describe the goods or services of such party, or their geographic origin….”