While specific provisions vary, com

While specific provisions vary, compulsory licenses are generally
authorized in the event of undesirable behavior by the patentee, such as
anti-competitive, non-working, or blocking behavior; in the event of “public
need,” such as government infringement or national emergency; or in
the context of food and drugs. Licensees are commonly required to pay
adequate compensation to a patentee in exchange for use of a patent. The
required amount is generally more than a “reasonable royalty,” the floor
for infringement compensation in the United States, but less than “lost
profits,” another basis for calculating infringement damages. The amount
of compensation varies among countries; commentators have observed
that “the United Kingdom has provided the most generous compensation
in its drug patent licensing decisions; the United States the least generous
compensation in key antitrust decisions.”

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Sementara ketentuan khusus bervariasi, wajib lisensi yang umumnyaberwenang dalam perilaku yang tidak diinginkan oleh paten, sepertianti-kompetitif, non-kerja, atau memblokir perilaku; dalam "publikperlu,"seperti pemerintah pelanggaran atau keadaan darurat nasional; atau dikonteks makanan dan obat-obatan. Pemegang lisensi umumnya diminta untuk membayarkompensasi secara memadai kepada paten untuk penggunaan paten. TheJumlah diperlukan umumnya lebih dari "royalti yang masuk akal," lantaiuntuk pelanggaran kompensasi di Amerika Serikat, tetapi kurang dari "hilangkeuntungan,"dasar untuk menghitung pelanggaran kerusakan. Jumlahkompensasi bervariasi antara negara-negara; komentator telah mengamatibahwa "Inggris telah memberikan kompensasi paling dermawandalam nya obat paten lisensi keputusan; Amerika Serikat yang paling dermawankompensasi dalam keputusan-keputusan kunci antitrust."