The high court declared the laws in New York and Michigan unconstitutional claiming they are discriminatory.
The ruling paves the way for consumers to be able to buy directly from California vineyards.
Steve Gross of the Wine Institute says the decision will benefit small to moderate sized wineries, which have had to turn away customers who have wanted to buy wine through the Internet.
"It's very frustrating to both the winery and the consumer who's literally at you doorstep asking you to ship them some wine."
New York and Michigan are important to producers because they're two of the leading wine consuming states in the country.
California vintners are hopeful the Supreme Court ruling opens up other states to direct sales of their products. Currently about one half of the states prohibit shipments from California.
(Photo courtesy: Free the Grapes)