Counterfeit consumer good

Counterfeit consumer goods—or counterfeit, fraudulent, and suspect items (CFSI)—are goods, often of inferior quality, made or sold under another's brand name without the brand owner's authorization. The colloquial terms knockoff or dupe (duplicate) are often used interchangeably with counterfeit, although their legal meanings are not identical.

Sellers of such goods may infringe on either the trademark, patent or copyright of the brand owner by passing off its goods as made by the brand owner. Counterfeit products made up 5 to 7% of world trade in 2013, and in 2014 cost an estimated 2.5 million jobs worldwide. Counterfeit products exist in virtually every industry.

The spread of counterfeit goods are worldwide, with the International Chamber of Commerce (ICC) in 2008 having estimated the global value of all counterfeit goods at $650 billion annually, increasing to $1.77 trillion by 2015. Countries mainly the U.S., U.K., Germany, Austria, Italy, France, Spain, Netherlands, Belgium, Switzerland, Denmark, Sweden, Norway, Finland, South Korea and Japan are among the hardest hit, as their economies thrive on producing high-value products, protected by intellectual property rights and trademarks.