Hmm, I think you may have some of the terms a little confused. This is common.
Patent is for an invention is the grant of a property right to the inventor, issued by the Patent and Trademark Office.
Trademark is a word, name, symbol or device which is used in trade with goods to indicate the source of the goods and to distinguish them from the goods of others. For example, think the Starbucks logo, or the Nike logo.
Copyright means "original works of authorship" such as books, movies, etc.
So when you ask if there is a copyright on a baby changing pad cover, I assume you mean a patent. There is. See HERE. And, HERE. There are more. Now it may or may not be close enough to your invention to count as separate.
There is no trademark for HAPPY TOTTS. But there is for HAPPY TOTS.
There is a TINY TOTT trademark.
MAKARIOS WHOLESALE is not trademarked, but MAKARIOS VINEYARDS is. You can do a search yourself here:
I hope this helps and clarifies. Please use the SEND or REPLY button to keep chatting, or please RATE when finished. You may always ask follow ups at no charge after rating. Kindly rate my answer as one of TOP THREE FACES/STARS and then SUBMIT, as this is how experts get credit for our time. Rating my answer the bottom two faces/stars (or failing to submit the rating) does not give me credit and reflects poorly on me, even if my answer is correct. I work very hard to formulate an informative and honest answer for you; please reciprocate my good faith with a positive rating.