the poor mans trademark / copy write,
you can take pictures of your product, & measurements.
put your ideas on paper explaining what your product is & what it does or is for. then mail it to yourself.
when it arrives to your house DO NOT open the letter. it is sealed, date & time stamped.
then get your copy write / trademark applied for. this will secure it as yours thru the proper channels, (gov).
iv done this & it is sustainable in court if you had to go that far