A more thorough explanation:

Reverse palming off is a term used in intellectual property law to describe the act of falsely representing another's product as one's own in an attempt to deceive potential buyers. This is also known as passing off.

For example, if a company sells a product that is similar to another company's product, but labels it with the other company's name and logo, this would be considered reverse palming off. The company is trying to deceive customers into thinking they are buying the other company's product.

Reverse passing off is the opposite of this, where a company takes another company's product and removes any identifying marks or labels, and then sells it as their own. This is also a form of passing off.

Both reverse palming off and reverse passing off are illegal under the law of unfair competition and may also be considered trademark infringement.