I post this here because it's about test equipment, and though I haven't come across this warning on equipment from other manufacturers, if it's somehow actually valid, it could apply broadly.
Holzworth Instrumentation is a US based company that builds low phase noise RF synthesizers and other related equipment. Printed on the outside of what seems like most of their equipment is the warning "Tampering with or opening this device is an admitted and direct violation of the intellectual property rights of Holzworth Instrumentation Inc.", and I was wondering if there is any actual basis in legality for this, at all. Best I can tell, it's a scare tactic to try and keep people out of their equipment, but I'm wondering if there is some IP registration right that could potentially actually extend to protecting an entire piece of equipment or if there is some classification a company can pursue to prevent their equipment from being legally serviceable (like getting some certification that it's military hardware or the like).
In some of their product manuals a similar statement is made, but only in the warranty section, which presumably means your warranty is void if you open it up and work on it, but with a two year default warranty, that's going to be beyond everything on the used market. I wouldn't expect that to extend beyond the warranty period in that case, but then how would that warrant the warning printed on the chassis?
Are there other companies that have similar warnings on their equipment? Does such a warning have any basis in legality (in the US or elsewhere)? Is it even legal for them to put that statement on their product if it isn't accurate/enforceable?