Sigma controversies
Controversies tied to this brand in public sources. A listing is not a finding of fault.
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2015
Nikon and Sigma settle patent litigation concerning image stabilization
Nikon’s patent dispute alleging infringement related to vibration-reduction technology ended in a settlement. The settlement terms were not publicly disclosed in the cited reference.
2011
Nikon patent lawsuit over image stabilization
Nikon sued Sigma, alleging that Sigma products infringed patents associated with Nikon’s vibration-reduction image-stabilization technology. The dispute concluded in 2015 through a settlement whose terms were not disclosed in the cited reference.