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lawsuitappealtrialburden of proofintellectual propertypatentcorporation
patentcorporation

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Brooktree Corp. v. Advanced Micro Devices, Inc., 977 F.2d 1555, 1992 Copr.L.Dec. P 26,997, 24 U.S.P.Q.2d 1401

Facts

Brooktree Corporation filed a lawsuit against Advanced Micro Devices, Inc. (AMD) for patent infringement and mask work registration infringement under the Semiconductor Chip Protection Act. The United States District Court for the Southern District of California ruled that Brooktree's patents were valid and infringed, and that AMD had infringed Brooktree's registered mask works. AMD appealed the decision, while Brooktree cross-appealed certain damage rulings. The case involved complex semiconductor technology and the validity of mask work registrations.

Brooktree was granted mask work registration MW 2873 on August 6, 1987, and registration MW 3838 on July 6, 1988, for its chips identified as Bt451 and Bt458. These Brooktree chips embody a circuit design that combines the functions of a static random access memory (SRAM) and a digital to analog converter (DAC).

Issue

Whether AMD infringed Brooktree's patents and mask work registrations, and whether the patents were valid.

Whether Advanced Micro Devices, Inc. infringed Brooktree Corporation's patents and mask work registrations, and whether the patents were valid.

Rule

The Semiconductor Chip Protection Act protects original designs of semiconductor chips, allowing for exclusive rights to reproduce mask works. Infringement does not require the entire chip to be copied; rather, substantial similarity to a material portion of the mask work suffices. The validity of patents is presumed, and the burden of proof lies with the party challenging the patent's validity.

Analysis

The court found that the jury had sufficient evidence to determine that AMD's chips were substantially similar to Brooktree's registered mask works, despite AMD's claims of reverse engineering. The court emphasized that the Semiconductor Chip Protection Act does not require the entire chip to be copied for infringement to occur. The jury's findings on the validity of the patents were also supported by substantial evidence, including the functionality of the patented technology.

The jury instruction on the criteria for establishing infringement included the instruction that infringement requires substantial similarity to a material portion of the registered mask work: 'To establish infringement, Brooktree must show that A.M.D.'s mask works are substantially similar to a material portion of the mask works in Brooktree's chips covered by Brooktree's mask work registration.'

Conclusion

The Court of Appeals affirmed the lower court's judgment, concluding that Brooktree's patents were valid and infringed, and that AMD had infringed Brooktree's registered mask works.

The judgment of the district court is affirmed.

Who won?

Brooktree Corporation prevailed in the case, as the court upheld the validity of its patents and mask work registrations, confirming that AMD had infringed these rights. The court's decision was based on substantial evidence presented during the trial, which demonstrated that AMD's products were substantially similar to Brooktree's protected designs. The ruling reinforced the importance of protecting intellectual property in the semiconductor industry, particularly in light of the significant investments made in research and development.

Brooktree Corporation prevailed in the case, as the court upheld the validity of its patents and mask work registrations, confirming that AMD had infringed these rights.

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