Trademark Dilution and the Blockbuster Case
The Trademark Trial and Appeal Board (TTAB) is currently deliberating a case that could reshape how trademark dilution is assessed. Blockbuster L.L.C., the defunct video rental giant, is opposing Southern Seed and Feed LLC’s application for the mark “BLOCK BUSTER” used on animal feed products. Blockbuster argues that Southern’s design - featuring a yellow-on-blue background, a ripped movie ticket, and text - confuses consumers and dilutes its iconic BLOCKBUSTER brand.
Dilution law safeguards trademarks from losing their distinctiveness, even in the absence of direct confusion. This means a renowned mark can still face vulnerability if its unique association with a source is weakened. For instance, a mark might become diluted if it is used in unrelated industries or if its distinctiveness is eroded by widespread, non-commercial use. However, proving a mark is “famous” under dilution remains a stringent requirement. Courts demand substantial evidence of widespread recognition, such as market share, media coverage, or cultural impact.
Blockbuster’s case hinges on whether its former dominance qualifies as “fame” for dilution purposes. At its peak, the company operated thousands of stores, generated billions in revenue, and had over 43 million members. Its brand was so recognizable that it even inspired plans for a theme park. Yet, Blockbuster’s decline has been dramatic: all corporate stores closed in 2014, and only one franchised location remains today, employing just twelve people.
The TTAB’s decision will determine whether a brand’s past success can justify dilution claims even after its market presence has diminished. This has broader implications for businesses that have faded from prominence but still retain cultural recognition. Companies like Sears and K-Mart, which operate a fraction of their former scale, could potentially leverage similar arguments. If Blockbuster prevails, it could signal that historical fame, not current market share, defines trademark strength.
For trademark owners and applicants, the case underscores the importance of monitoring brand usage and understanding how historical recognition might influence legal outcomes. The TTAB’s ruling could redefine boundaries in trademark enforcement, particularly for brands navigating the transition from mainstream success to niche relevance.
IP Defender monitors national trademark databases for conflicts and infringements, ensuring brands stay ahead of potential threats. With coverage across 50+ countries, including the EU and US, the service provides a reliable shield against unauthorized use. Businesses that rely on their trademarks as a core asset cannot afford to ignore the risks of oversight. By leveraging IP Defender’s expertise, companies can safeguard their intellectual property and avoid the costly pitfalls of delayed action.
The TTAB’s ruling may set a precedent that favors historical recognition over current relevance. For brands with a legacy, this could mean a renewed focus on protecting their legacy from dilution. Whether a company is in its prime or has faded into memory, the stakes of trademark enforcement remain high. Proactive monitoring isn’t just a best practice - it’s a necessity for those who want to preserve their brand’s integrity and value.