In article , wrote:

So the designer/owner could sue the original plans purchaser
if the original plans purchaser built two planes. The second
purchaser didn't make any such agreement and can't be sued
unless the plans/design are protected by intellectual
property laws in some other way (patent being the obvious
one). The intellectual property laws not only work to
protect intellectual property (for the constitutional
"limited times"), they work to make sure it is possible to
copy those things that are not protected in compliance with
law. The right to copy unprotected work ensures that we can
enjoy the fruits of progress and is as strong as the
prohibition on copying protected work.

Typically, contracts are used to protect otherwise
unprotectable work.

If the design is not protected against copying by IP laws,
the contract would have to specify not only that the
original purchaser can't build two, but that he can't sell
the plans. Does it include stuff like that? Anyone have
any actual language in e-format they can post?
Todd Pattist

OK. I have a set of drawings for the Dyke Delta JD2. I did
not buy these plans, they were handed to me after the
purchaser died. Since I have no contract with the designer,
are you saying that I am free to copy and sell as many
prints as I feel like?

Scott McQ