Earlier quoted context omitted.
I never said you didn't have a duty to defend trade dress. It can be diluted just like trademarks. There may be some overlap, and as far as what's covered by the design patent is covered by trade dress you'd have to defend it (or risk dilution), but it has nothing to do with the patent. You can register for trade dress protection without design patents. Design patents expire, trade dress does not, it's definitely pos…
Yes, because design patents expire, there's even greater reason to need to defend them while they exist. Design patents and trade dress protection often go hand in hand. In order to show trade dress infringement, one needs to show consumer confusion between the two products, and IIRC one needs around 4 years of solid registration before protection is enabled. So when you don't have trade dress protection yet, you wou…
The patent itself will not become diluted, thus using the term "obligation to defend" is incorrect. It may be a good idea to use it to help establish trade dress protection, but your design patent will last just as long and still be enforceable even if you choose not to defend it.