Conduct an extensive search. There are free and “easy to use” options available. But take note that IP searches are not as easy as you think. There are phrases or quotes that aren’t as common under copyright protection, but as other answers have indicated, it does happen. Most of your concerns will center on your ability to coin the phrase so that you can sell products or services.
Do a preliminary search, but before you use the phrase to make money, then you need to confirm that it doesn’t belong to anybody else. The role of an IP attorney is crucial in helping you double check through extensive researches. IP attorneys are experts when it comes to researching and reviewing trademarks and copyrights.
If you are interested in finding an IP attorney, let LawTrades help. We can connect you with a skilled lawyer that is much more affordable than a traditional law firm attorney. Check us out and please get in touch if you’d like more assistance. Best of luck!