Thanks for the feedback. I guess I'm having trouble understanding why fair use doesn't prevail here if it is clearly a personal quote or opinion on the business card. Putting "Proud mother of 3" doesn't imply the business owns or has a relationship with those children, right? I could totally see the issue here if it was by our business logo, as in near our social media stuff but this is a personal quote on the card.
Fair use potentially
could apply but fair use is an affirmative defense to an infringement action and not permission to use someone else's rights-protected material (either under trademark laws or copyright laws). So, although fair use could be argued if you receive a cease and desist letter or notification that you are being sued, you probably do not want to put yourself in the position of having to make a fair use argument in court. That can be a very costly argument to make.
Essentially, the use of another's trademark is allowed only when used to describe the company and its products or services. It is
not allowed when the user of the mark is trading off the good will and reputation of the trademark holder, or confusing consumers into falsely thinking a relationship exists between the user of the mark and the trademark holder.
Your use on your business cards could be seen by the trademark holder as trading off their reputation and could confuse consumers into thinking your business is connected to their business. It could be seen as infringement and fall under both federal and state unfair business practice laws.
If you want to use a personal quote on your business cards (e.g., "Proud Mother of 3"), you can do that (although I personally think personal quotes are best left off business cards). And I recommend you do not use any quote that involves another's rights-protected material (another company's name, logo, slogan, symbol, etc, or anyone else's copyrighted works).