Blurring of a trademark brand and how it weakens the brand - with examples

"Blurring" refers to a situation where a trademark's distinctiveness and brand identity become diluted or blurred due to its unauthorized use on unrelated goods or services. This can damage the trademark's selling power and ability to serve as a unique identifier. Here are some real-world examples of trademark blurring and its effects:

Can I trademark a name already in use but not trademarked?

Can I trademark a name already in use but not trademarked? When considering whether you...

How to Select a Strong Trademark - the Spectrum of Trademark Strength

In developing a list of potential trademarks, consider the relative strength of marks. A strong or distinctive mark (typically a coined word or an arbitrary trademark) is easier to  protect from use by others than more descriptive—and, therefore, weaker—marks. The following is the spectrum of distinctiveness of a brand, from a trademarking point of view: