Gusteau's

Gusteau's is a restaurant in Paris, France founded by Auguste Gusteau featured in Ratatouille.

There is a restaurant in the city of El Alto in Bolivia that took the name of Gusteau's from the movie. This restaurant has been operating since 2017. This restaurant has a Facebook page.

It is usual to see companies that take ideas from movies since their creators do not register their designs.

https://fictionalcompanies.fandom.com/wiki/Gusteau%27s

Wonka Candy Company

 

Featured in: Willy Wonka & the Chocolate Factory (1971) and Charlie and the Chocolate Factory (2005)

Wonka Candy Company is a fictional Chocolate Factory founded and owned by Willy Wonka. This company originally appears in the novels Charlie and the Chocolate Factory and the sequel Charlie and the Great Glass Elevator. Willy Wonka is known as the greatest inventor of candies in the world.

The Willy Wonka Candy Company is a British candy brand founded in 1971 that began as the property of the Swiss corporation Nestlé Corporation. The Willy Wonka brand and the sweets were licensed by Roald Dahl, who created the classic children's novel Charlie and the chocolate factory, where film adaptations were the marketing drive to bring the Wonka brand to reality.

https://en.wikipedia.org/wiki/Charlie_and_the_Chocolate_Factory_(film)

https://es.wikipedia.org/wiki/The_Willy_Wonka_Candy_Company

Pepsi Perfect

Featured in: Back to the future: Part 2 (1989)

This is a drinks company wel known in the real world but this version called pepsi perfect, is presented as a vitamin-enriched variety and with a fresh logo. Pepsi perfect is sold at the Cafe 80's in 2015. On October 5, 2015, Pepsi announced that they would be releasing a limited quantity of Pepsi Perfect bottles, some of which were given out to lucky attendees of New York Comic Con. Pepsi does this to commemorate the movie just in the year in which Marty McFly travels to the future in part 2 of the trilogy.

https://backtothefuture.fandom.com/wiki/Pepsi_Perfect

Duff Beer

Featured in: The Simpsons (Animated Tv Series) (1987- present)

Duff Beer is a brand of beer that originated as a fictional beverage on the animated series The Simpsons. Beers using the Duff branding have been brewed in a number of countries, resulting in legal battles with varying results. An official version of the beer is sold in three variations near the Simpsons Ride at Universal Studios. In 2015, 20th Century Fox, producer of The Simpsons, began selling licensed Duff beer in Chile, with a view to driving out brandjacking.

https://en.wikipedia.org/wiki/Duff_Beer