Phrase guide

patent troll

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ˈpætənt ˌtɹəʊl/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • General-American: /ˈpætənt ˌtɹoʊl/

1

noun

Meaning 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.

Definition source: English Wiktionary via Wiktextract

Usage: derogatory, informal

Topics: intellectual-property, law, patent-law

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From patent + troll (“in folklore, a grotesque humanoid creature living in caves or hills, or under bridges”), a reference to trolls in folktales who block the path of travellers or threaten to harm them unless some payment is made.

Across languages

Translations

18 source translations are retained for this English entry.

  • Arabic: تصيد براءات الاختراع — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Chinese Mandarin: 專利流氓 /专利流氓 (zhuānlìliúmáng) — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Dutch: patenttrol — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Finnish: patenttitrolli — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • French: patent troll — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • German: Patenttroll — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Hebrew: טרול פטנטים — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Hungarian: szabadalmi troll — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Japanese: パテント・トロール (patento torōru) — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Japanese: 特許ゴロ (tokkyo goro) — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Korean: 특허 괴물 (teukheo goemul) — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Persian: پتنت ترول — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Polish: troll patentowy — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Portuguese: troll de patente — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Russian: патентный тролль (patentnyj trollʹ) — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Spanish: trol de patentes — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Swedish: patenttroll — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner
  • Ukrainian: патентний троль (patentnyj trolʹ) — company, person, etc., that owns and enforces patents in an aggressive and opportunistic manner