You don't need a patent lawyer, just read 35 U.S. Code § 271. " . . . whoever without authority makes, uses, offers to sell, or sells any patented invention, within the United States or imports into the United States any patented invention during the term of the the patent therefor, infringes the patents.
Amazon, Walmart, etc. aren't likely the ultimate targets of the suit. The suits are designed to bring in the producers under the indemnity portion of their contract with the retailer. Its a jurisdictional hook and way to effectively multiply the amount of pressure on the actual infringer, by threatening to cut off their access to the retailer (which could be accomplished in the ITC) and leverage possible contractual damages they face from the retailer. The ultimate goal is to pressure Everlight, Eaton, and whoever else is making the light bulbs to pay for a license, and using Amazon and Walmart to force them to do so.
this really looks like they are truly after these five large retailers because they probably cannot affect the manufacturers of the products. so in effect a retailer simply should be able to discontinue selling the product but from the press release that is not the goal of the suit. They clearly state they want products using the technology sold but they want to put the onus on the retailer.
to be blunt it is because these retailers have the means to pass on this fee and not necessarily just by individual product sales.
The retailers have their own store brand filament led bulbs, this alone makes them bigger targets as they are electing to manufacture bulbs with their own branding on them.
Amazon, Walmart, etc. aren't likely the ultimate targets of the suit. The suits are designed to bring in the producers under the indemnity portion of their contract with the retailer. Its a jurisdictional hook and way to effectively multiply the amount of pressure on the actual infringer, by threatening to cut off their access to the retailer (which could be accomplished in the ITC) and leverage possible contractual damages they face from the retailer. The ultimate goal is to pressure Everlight, Eaton, and whoever else is making the light bulbs to pay for a license, and using Amazon and Walmart to force them to do so.