Assignor estoppel survives in US patent law but applies only where the invalidity claim is inconsistent with representations made at assignment, making the doctrine flexible rather than absolute.
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Foreign words used as trademarks are assessed for descriptiveness in the Australian English-speaking market; Italian words for coffee were registrable as not inherently descriptive.
Statutory licence scheme for sound recordings validly enacted under constitutional copyright power and did not constitute an unjust acquisition of property.
An ISP that failed to act on infringement notices did not authorise subscribers' copyright infringement via BitTorrent, as it lacked the requisite control over the infringing acts.
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