I worked for a US based defense contractor.
Because the parent firm was British, the division had to be incorporated with it's own board of directors so as to create a fire wall on what we were doing from the foreign entity that owned us.
We were also separate from the approximately 36 other divisions.
During my employment, I came up with a novel invention.
Although this Proprietary Agreement states 42 times the agreement is between myself and the Incorporated Division, Corporate is now claiming the agreement extends to all divisions. I have nothing in writing that states as such from my time of employment.
Question: By disclosing the invention to an engineer from a division other than the solely Incorporated Div I work for, did I put the invention into public domain?
Dialogue occurred around summer of 2012.