patent troll

Etymology
From +, a reference to trolls in folktales who block the path of travellers or threaten to harm them unless some payment is made.

Noun

 * 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.

Translations

 * Arabic: تصيد براءات الاختراع
 * Chinese:
 * Mandarin: 專利流氓
 * Dutch:
 * Finnish: patenttitrolli
 * French:
 * German:
 * Hebrew: טרול פטנטים
 * Hungarian: szabadalmi troll
 * Japanese: パテント・トロール, 特許ゴロ
 * Korean: 특허 괴물
 * Persian: پتنت ترول
 * Polish:
 * Portuguese: troll de patente
 * Russian:
 * Spanish: trol de patentes
 * Swedish: patenttroll
 * Ukrainian: патентний троль