The author of any product of the mind, whether it is an invention, or a composition in letters or art, or a design, with or without delineation, or other graphical representation, has an exclusive ownership therein, and in

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19 Guam Code Ann. PERSONAL RELATIONS
CH. 31 PARTICULAR KINDS OF PERSONAL PROPERTY

the representation or expression thereof, which continues so long as the product and the representations or expressions thereof made by him remain in his possession.
SOURCE: CC ‘980.