Facebook, Inc. v. Teachbook.com LLC

United States District Court, Northern District of California – 2011

“A famous mark cannot be diluted by clever wordplay.”

SHORT DESCRIPTION

Facebook, Inc. v. Teachbook.com LLC is an important trademark infringement and dilution case that highlights how well-known trademarks enjoy enhanced protection, especially in the digital space. The case reinforces the principle that even slight variations of a famous brand name, when used in related online services, can amount to trademark infringement if they create confusion or dilute the distinctiveness of the original mark.

FACTS OF THE CASE

Facebook, Inc. is the owner of the globally recognised trademark “FACEBOOK,” associated with social networking services offered through its online platform. Over time, the mark acquired immense goodwill and was recognised as a famous trademark worldwide.

Teachbook.com LLC launched a website named “Teachbook,” which was designed as an online social networking platform for teachers. The defendant used the word “book” prominently in combination with another descriptive term and adopted a similar naming structure to Facebook. Facebook contended that the use of “Teachbook” unfairly exploited the distinctiveness of its trademark and created a likelihood of consumer confusion.

Facebook initiated legal action alleging trademark infringement, trademark dilution, and unfair competition, arguing that the defendant was attempting to ride on the popularity and reputation of the FACEBOOK mark.

ISSUES INVOLVED

The central issue before the Court was whether the use of the name “Teachbook” infringed and diluted the famous FACEBOOK trademark. The Court examined whether consumers were likely to associate Teachbook with Facebook and whether the use weakened the unique identity of the FACEBOOK mark, even if actual confusion was limited.

COURT’S FINDINGS AND OBSERVATIONS

The Court found that FACEBOOK was a strong and famous trademark entitled to broad protection. It held that the defendant’s use of “Teachbook” created a likelihood of confusion due to the similarity in structure and commercial impression. The Court also observed that the repeated use of the “–book” suffix in online social networking contexts could dilute the distinctiveness of the FACEBOOK brand.

The Court granted relief in favour of Facebook, recognising that famous marks deserve protection not only against direct imitation but also against subtle variations that exploit brand recognition.

SUGGESTION / PRACTICAL TAKEAWAY

This case serves as a warning to startups and digital platforms that creative naming strategies must not encroach upon established trademarks. Famous brands enjoy wider protection, and even indirect associations or structural similarities can attract legal liability. Trademark clearance and risk assessment are essential before launching new digital services.

JUDGMENT

Year: 2011

The U.S. District Court ruled in favour of Facebook, restraining the defendant from using the “Teachbook” mark.