• Champagne: Champagne is a sparkling wine that is produced in the Champagne region of France. The name "Champagne" is protected by a GI in the European Union (EU), which means that only sparkling wine produced in the Champagne region can be called Champagne. However, the name "Champagne" is not protected by a patent in the United States. This means that any producer can use the name "Champagne" to market sparkling wine, regardless of where it is produced.

• Feta: Feta is a brined cheese that is traditionally produced in Greece. The name "Feta" is protected by a GI in the EU, which means that only cheese produced in Greece using traditional methods can be called Feta. However, the name "Feta" is not protected by a patent in the United States. This means that any producer can use the name "Feta" to market brined cheese, regardless of where it is produced.

• Tequila: Tequila is a distilled spirit that is produced in Mexico. The name "Tequila" is protected by a GI in Mexico, which means that only spirits produced in Mexico using specific methods can be called Tequila. However, the name "Tequila" is not protected by a patent in the United States. This means that any producer can use the name "Tequila" to market distilled spirits, regardless of where they are produced.

• Parmesan: Parmesan is a hard cheese that is traditionally produced in Italy. The name "Parmesan" is protected by a GI in the EU, which means that only cheese produced in Italy using traditional methods can be called Parmesan. However, the name "Parmesan" is not protected by a patent in the United States. This means that any producer can use the name "Parmesan" to market hard cheese, regardless of where it is produced.

• Camembert: Camembert is a soft cheese that is traditionally produced in France. The name "Camembert" is protected by a GI in the EU, which means that only cheese produced in France using traditional methods can be called Camembert. However, the name "Camembert" is not protected by a patent in the United States. This means that any producer can use the name "Camembert" to market soft cheese, regardless of where it is produced.

There are a few reasons why these GIs have not been recognized for patent protection. First, GIs are typically protected by trademark law, not patent law. Trademark law protects words, phrases, symbols, and designs that are used to identify the source of goods or services. Patent law, on the other hand, protects inventions that are new, useful, and non-obvious.

Second, GIs are often seen as being more important than patents in protecting the reputation and quality of a product. A GI can help consumers to identify products that have been produced in a particular region using traditional methods. This can be important for products that are associated with a certain quality or reputation, such as Champagne or Parmesan cheese.

Finally, it can be difficult to obtain a patent for a GI. In order to be granted a patent, an invention must be new, useful, and non-obvious. However, a GI is typically not considered to be an invention. Instead, it is seen as a way to protect the reputation and quality of a product that has been produced in a particular region using traditional methods.

Despite the fact that these GIs have not been recognized for patent protection, they are still valuable assets for the producers of these products. The reputation and quality associated with these GIs can help producers to charge a premium price for their products. Additionally, the protection offered by GIs can help to prevent producers from other regions from using the names of these products to market their own products.