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Specialized v. Scott USA. UC Berkeley Patent Engineering Presentation. Kenny Rakestraw. Case discusses US patent infringement and how after a long trial, the accused party gave up fighting in US, but can’t be sued outside of US. Company Intro.
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Specialized v. Scott USA UC Berkeley Patent Engineering Presentation Kenny Rakestraw Case discusses US patent infringement and how after a long trial, the accused party gave up fighting in US, but can’t be sued outside of US.
Company Intro • Specialized and Scott USA are two of the top bike companies in the USA • Design mountain bikes, time trial bikes, commuter bikes, etc. • Scott is popular in over 60 countries outside USA
Case Specifics • July 2004 • Patent dispute over its FSR four-bar linkage suspension patent with ‘Horst Link’ • Lawsuit against Scott USA, seeking to prevent the company from selling full-suspension mountain bike models in the United States.
Four-bar Link Suspension • Several linkage points to activate the shock. Pivots • Top of the seat stay • Behind the bottom bracket • Mounted on the chain stay, as shown it is known as the ‘Horst Link’. Can be placed just above the rear axle on seat stay.
Four-bar ‘Horst’ Link Suspension • Designed by Horst Leitner in 1991 • Specialized bought the Horst Link patent in May of 1998. Applied it to FSR suspension design. • 3rd pivot is on chain stay below axle • Cycles freely—even when the rear brakes are applied • Smooth and uninhabited suspension on rough terrain • FSR linkage also limits chain growth, pedal feedback and brake jack.
Suspension Designs Scott USA Specialized
Disadvantages without Horst Link • 3rd pivot on seat stay rather than chain stay • When applying brakes, the rear suspension stiffens slightly and the rear wheel stops damping vibrations from bumpy terrain • Rear axle’s path is more like that of a single-pivot bike
Scott USA drops 18 month lawsuit Scott USA will not sell Genius full-suspension bikes in USA Scott USA focuses on alternative design, the Ransom Case Resolution Scott’s Ransom full carbon mountain bike
Future of Innovation • I-drive was born • Many companies pursue virtual pivot designs. • Small companies that presents little risk to Specialized’s market share may pay to utilize the Horst Link design. • Big competitors will be brought to court I-Drive Virtual Pivot