#1622 1950 · Otis Elevator Company · Industrial equipment / trademark law
Otis won the escalator market so completely it lost the trademark on the word
the problem
A company invents a category-defining name, but letting rivals use it generically can legally void the trademark
background
Charles Seeberger, working with Otis Elevator Company, registered the trademark "ESCALATOR" in 1900 for the moving-stairway technology Otis had commercialized, and assigned the rights to Otis the following year. For decades Otis was effectively the sole recognized maker of the product, and its own advertising, technical literature, and public communications increasingly used "escalator" the way "elevator" was used, as a description of the type of machine rather than consistently flagging it as Otis's proprietary brand name.
By the late 1940s, competitors including Haughton Elevator Company were manufacturing and selling their own moving staircases, and both engineers, architects and the general public had come to use "escalator" as the generic name for the category rather than as an identifier of Otis as the specific manufacturer. In 1950, Haughton petitioned the US Patent Office to cancel Otis's ESCALATOR registration on exactly this ground.
what everyone would do
Treat overwhelming brand recognition as a pure win, market as aggressively as possible without worrying about whether the word is being used generically, since more usage of the name seems to only reinforce market dominance and consumer association with the original maker.
what they saw
Otis marketed 'Escalator' so well the public stopped hearing a brand and started hearing the thing itself. In 1950 the Patent Office agreed, cancelling the trademark Otis spent fifty years building.
the move
In Haughton Elevator Co. v. Seeberger, 85 U.S.P.Q. 80 (1950), the Assistant Commissioner of Patents ruled in Haughton's favor and cancelled the ESCALATOR trademark registration. The decision's central finding was that Otis's own conduct, including its advertising and technical publications, had treated "escalator" the same descriptive way the industry treated "elevator": as the name of the machine, not the name of its maker. The ruling noted that the term was recognized by engineers, architects and the general public as the name for a moving stairway, without reference to whoever built it, and that a trademark owner who fails to police this kind of generic drift forfeits the exclusive right to the word. The ruling meant that from 1950 onward, every competing elevator and escalator manufacturer, not just Otis, could market moving staircases as "escalators" without infringing any trademark, permanently and irreversibly opening a word Otis had spent half a century building public recognition for. The case became a foundational citation in US trademark law on the doctrine of genericide, the process by which a trademark becomes so successful and so widely used as a generic descriptor that courts strip it of legal protection, a fate that has also befallen brand names like aspirin, thermos, and cellophane.
why it works
The ruling rested on Otis's own conduct: because Otis's advertising and technical documents habitually used "escalator" the same generic, descriptive way "elevator" was used, rather than consistently marking it as a proprietary Otis brand name, Otis had itself supplied the evidence that the word functioned as a common noun rather than a trademark. Courts weigh how the trademark owner itself treats the term as much as how competitors or the public do, which is why the doctrine catches even diligent-seeming companies whose own marketing language undermines their legal position.
the payoff
In 1950 the US Patent Office ruled 'escalator' generic, cancelling Otis's 50-year trademark and freeing rivals to use the word.
where it breaks
This is a one-directional risk with no comparable upside: no company benefits from having its trademark ruled generic, so the lesson is entirely defensive. Companies that successfully avoid genericide, such as Google actively policing "google" as a generic verb for web search, or Xerox running ad campaigns reminding people not to say "xerox" for photocopying generically, show the fix is consistent trademark-symbol use, capitalization discipline, and public correction campaigns, an ongoing cost some companies judge not worth paying until it's too late.
what came after
Haughton Elevator Co. v. Seeberger became a foundational precedent in US trademark law for the doctrine of genericide, routinely cited in intellectual property casebooks and taught alongside aspirin, thermos, and cellophane as examples of brand names lost to their own success.
references
- [1]How the Escalator Forever Changed Our Sense of SpaceSmithsonian Magazine, 2015smithsonianmag.com
- [2]Haughton Elevator Co. v. Seeberger, 85 U.S.P.Q. 80 (1950): Case Brief SummaryQuimbee, 2020quimbee.com