Many years ago (early 90s) I used some vector art from a CorelDraw cdrom on a buisness card for my company logo. somehow my card made its way to another company

Many years ago (early 90s) I used some vector art from a CorelDraw cdrom on a buisness card for my company logo. somehow my card made its way to another company's lawer who served me with a cease and desist notice. Being a small company and not wanting to be sued, I complied and stopped using the logo. I can't recall if it was a copyright or trademark issue but I remember the letter caused me a great deal of stress at the time. Looking back now it was sort of a blessing in disguise since because of that letter, the next time I started a company I took the time to learn the simple process of taking a digital photo and converting it into to an SVG and have done that for all of my companies I've started over the years. Creating an SVG logo or clipart from a photograph isn't difficult to do, especially nowadays with Inkscape and actually provides a sort of CMA proof of work to defend against copyright trolls.