The LED filament lamp market began 2019 with a patent lawsuit. Taiwan-based flexible LED filament developer Liquidleds filed a patent infringement lawsuit against French lighting company GIRARD SUDRON, requesting a halt of further sale of patent-infringing products. (Image: Liquidleds) Liquidleds on December 20, 2018 filed with the Mannheim Court of Germany a lawsuit accusing European lighting company GIRARD SUDRON of manufacturing and selling products that infringe Liquidleds’ patents in regard to flexible LED filament and filament b...