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The ''Barbed Wire Patent Case, 143 U.S. 275'' was a significant patent dispute in 1892 between plaintiff Joseph Glidden and the USPTO regarding the right of barbed wire. Lucian Smith was the original inventor in 1867 and held patent rights for it, with Glidden making changes to it in 1874 that he believed were novelty enough to merit a new invention and thus new patent.〔(【引用サイトリンク】 work =Justia: US Supreme Court Center )〕 ==Background== Lucien B. Smith had first invented a basic form of barbed wire in 1867 and received the patent for it. Therefore at the time he had exclusive rights to produce and sell his product. In 1874, after Glidden made his changes, he was issued a statement denying him a new patent on the grounds that his invention simply was not a novelty.〔 His patent claim was for: :"a twisted fence wire having the transverse spur wire, D, bent at its middle portion about one of the wire strands, a, of said fence wire, and clamped in position and place by the other wire strand, z, twisted upon its fellow, substantially as specified."〔 The Patenting and Trademark office denied his application believing that the process was already widely known common knowledge and not novel enough to be distinguished from earlier patents.〔 After Glidden's patent application had been denied, he appealed to the decision and eventually the case went before the Supreme Court.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「The Barbed Wire Patent」の詳細全文を読む スポンサード リンク
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