A copyright can be valid.Logical formLearned from148 sentences. Copyright can be by authors.Logical formLearned from144 sentences. A copyright can be invalid.Logical formLearned from139 sentences. Copyrights may pertain-to a person.Logical formLearned from136 sentences. Permission may pertain-to a (copyright owner).Logical formLearned from132 sentences. Issues can be constituted-of-or-filled-with copyright.Logical formLearned from131 sentences. Permission may pertain-to a (copyright holder).Logical formLearned from131 sentences. Ownership may pertain-to a copyright.Logical formLearned from124 sentences. A (copyright piracy) can be rampant.Logical formLearned from121 sentences. Copyrights may pertain-to a male.Logical formLearned from119 sentences. A notice may be placed by a (copyright holder).Logical formLearned from119 sentences. Copyright can be by a male.Logical formLearned from117 sentences. Works may be protected by copyright.Logical formLearned from114 sentences. A copyright can be digital.Logical formLearned from111 sentences. An article can be a copyright.Logical formLearned from110 sentences.