Copyrights aren't always easy to understand, and there is at least one major myth that has to be dispelled immediately involving the ease with which some believe they can obtain a copyright.
The dilution of your trademark is a serious offense that you must take legal action against. When trademarks are diluted, it means that someone else is using a similar, or the same, mark and hurting your reputation -or hijacking your brand and customer base.
To protect the interests of your business, you need to understand trademarks and how they are protected. You cannot use another person's trademark, and you don't want someone to use yours without your permission.
If you work in chemistry, there's a chance you may develop a new chemical or mixture that you need to further develop and protect. Even if you don't work with the specifics of medications or chemical mixtures, you know the importance of protecting your new creation. If you don't, others may use the same formula and, essentially, steal your hard work and any profits that could have come from it.
As an artist, you love creating work and sharing it online. The problem is that it's too easy for others to steal your work. Even if you use a watermark on the image, people with programs like Photoshop can remove that watermark and use your imagery as their own.