> The way trademarks work is that if you don't actively defend them you weaken your rights.

I mean this is the OP sentence, it's not about the food truck, it's about setting a precedent that you don't care, which costs you later when a competing brand starts distributing in a way that can actually confuse consumers.

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ameliaquining 13 hours ago | parent [-]

Has any court ever ruled that a trademark was abandoned, merely on the grounds that its owners didn't try to prosecute a borderline infringement case?

	▲	dghlsakjg 9 hours ago \| parent [-]
		This is a dilution not abandonment issue. Courts will look at the level of systematic tolerance. If you have a history of vigorous enforcement, it will be harder to argue in the future that a borderline dilution should be allowed. If you allow borderline dilution, the court is going to consider what you have let other people get away with in the past. It’s a bit of a catch 22