Where does “patent troll” come from?

patent troll (English) comes from English patent, from Middle English patent, from Middle French patent, from Old French patent, from Latin patēns, from Latin pateō, from Proto-Indo-European peth₂- — to spread out; to fly.

patent troll (English): A company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner, often with no intention of producing, marketing, or promoting the subjects of the patents

Definitions

  1. A company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner, often with no intention of producing, marketing, or promoting the subjects of the patents

Ancestry of “patent troll”, step by step

patent troll traces back through two separate lines of ancestry.

via English patent

StepLanguageWordMeaning
1EnglishpatentA declaration issued by a government agency...
2Middle EnglishpatentA letter conferring a privilege or status; Such a...
3Middle Frenchpatent
4Old Frenchpatent
5Latinpatēnsbeing opening; open
6Latinpateōto be open, accessible, attainable
7Proto-Indo-Europeanpeth₂-to spread out; to fly

via English Troll

StepLanguageWordMeaning
1EnglishTrolla native or resident of the Lower Peninsula of Michigan
2Swedishtrolla troll supernatural being
3Old Norsetrǫllwitch, mage, conjurer
4Proto-Germanictruzląa supernatural being; demon; fiend; giant;...
5Proto-Indo-Europeandreh₂-run; to run, escape
Every word from Proto-Indo-European peth₂-