trade identifier of products or services
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A trademark (or trade mark) is a way for a business to help people identify the products that the business makes from the products made by another business. A trademark can be a name, word, phrase, symbol, logo, design, or picture. It can only be used on things made by the business that owns the trademark.

For example, Coca-Cola and Coke are trademark names for a certain drink made by the Coca-Cola Company. No other business can use these names or any names similar to them. Other businesses can make a drink that is similar, like colas soft drinks, but they have to use a different name for their drink, such as Pepsi.

Another example is the Nike company which makes sporting goods like shoes and clothes. The "swoosh" symbol used on their products is a trademark.

Famous trademarks like Coca-Cola and Nike are used for branding whole families of products.

Trademark and law change

Trademarks for bakers were first included in a law in the 13th century in England. France expanded trademark laws in the late 19th century and other countries followed.

In the United States, the governing law for trademarks is the Lanham Act, in Germany the Markengesetz.

Getting a trademark change

Trademarks are protected by law. In some countries, a person or company can get a trademark simply by using the name, word, phrase, symbol, logo, design, or picture on its products.

Trademarks can also be registered. In that case, the business tells the government of its country that it wants to use a certain name, word, phrase, symbol, logo, design or picture as a trademark for the products it sells. If no other person or business is using the trademark to sell those products, then the government will list that trademark. Once it is listed, no one else can use that trademark for those products. This is called "registering" the trademark.

Using another person's trademark change

If someone uses the trademark in a wrong way, the trademark owner can sue the other person. If a court decides that the other person was not allowed to use the trademark, they might have to pay damages to the trademark owner.

If another person wants to use a trademark that they do not own, they can ask the trademark owner for permission. The trademark owner can grant the other person a license. The other person usually must pay some money to the trademark owner for the license. This can be in the form of a percentage of the cost of the product that the other person sells called a royalty. For example, a person might pay Nike ten percent (10%) of the cost of each pair of shoes it sells for the right to include the Swoosh.

Marking products with trademarks change

When people write a word that is a trademark or show a picture or symbol that is a trademark, they should say that it is a trademark. If a trademark is not registered, they can write the word "Trademark", use the abbreviation "TM", or use the symbol on their products.

If a trademark is registered, they can use the letter R in a circle symbol: "®". People can also say it is a "registered trademark" or use the abbreviation "Reg.".

Service marks change

Trademarks are used for products. Businesses that do things for people instead of making things are called service providers. They can get a service mark instead of a trademark. When people write or show a service mark, they can use the service mark symbol: "℠".