News SEGA Files Lawsuit Against Memento Mori Developer

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SEGA Corporation has filed a lawsuit against Bank of Innovation, the Japanese developer behind the mobile idle RPG "Memento Mori." The lawsuit alleges multiple patent infringements and seeks significant damages.

Key Details

• Damages Sought: ¥1 billion (approximately $6.63 million USD)
• Additional Action: SEGA is seeking an injunction against Memento Mori and related content
• Patents Involved: Five patents registered in Japan (numbers 5930111, 6402953, 6891987, 7297361, and 7411307)
• Nature of Patents: Reportedly related to gacha game mechanics widely used in mobile games

Background

• Memento Mori is an idle RPG released in 2022 for iOS and Android
• The game features "Witches" with special powers and is known for its art and music
• Each Witch has a unique song, often referred to as Live 2D concerts

Reactions and Implications

1. Bank of Innovation denies any infringement and plans to defend itself
2. The developer intends to continue running Memento Mori regardless of the lawsuit's outcome
3. Bank of Innovation's stock dropped nearly 18% following the announcement

Context

This lawsuit follows a similar recent case where Nintendo and The Pokémon Company sued Palworld developer Pocketpair over alleged patent infringements.

Industry Impact

The case is attracting attention due to the nature of the patents involved, which describe common gacha-related mechanics such as synthesis and ceiling systems widely used in mobile games.

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SEGA Seeks 1 Billion Yen In Damages From Developer Of Mobile RPG 'Memento Mori'

Allegations of patent infringement

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