专利怪物(patent troll)是那些申请“纸面专利”(paper patent)或“潜水艇专利”(submarine patent)的公司，它们从不打算开发这些专利，而只是将其用作起诉不知情侵权者的工具。

Patent trolls are those who file "paper patents" or "submarine patents" that they never intend to exploit, but merely use as tools to Sue unwitting infringers.

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