I do product design for a living 16 years now and on about 32 US patents. Been there on both sides of the fence. Been ripped off and directly copied by the overseas copy cats. Been false accused and had to defend my art at major wasted costs. Not easy being an artist. In this short time I have seen alot. Here are a few things I have learned, I am not a lawyer haha.
The average US patent is good for about 12 years then it's common public domain.
If you have an idea you have faith in, Protect it.
The last thing anyone ever wants to do is go to a jury trial as you never know what will happen.
Products have a life. They live and die... just as we do.
If someone says they have a great "million dollar" idea keep in mind it's nothing more than a fantacy, untill it's brought to life.
Your fantacy could be patented, but easily disallowed in court. Most of them lack the blood sweat and tears of specfic function and detailed use.
If your serious about an idea, get a smart patent attorney. It makes all the difference!
Don't show your idea protypes to others, keep your mouth shut. Patents could be dissallowed if proof is shown ideas were presented to the public before the patent is applied for.
A smart attorney is as only powerful as the information he or she is provided with by you The Designer.
You can still be ripped off even if you have a patent if you can't afford to defend it. Don't rely on the free attorney if I win deal, few will ever take your case on contingency unless you have Very solid case.
Few ever are.
A lawyer judge or jury will never fully understand your true design intent.
Never trust your lawyer, they are all snakes in the grass.
Nobody is safe.
Ethics. Very true how they are being lost on a daily basis.