Pfizer spokesman said Thursday the company is awaiting a letter from the patent office explaining the decision.

辉瑞发言人说周四公司等待着专利局的对这一裁决的解释信。

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The international letter of patent and exhibition photograph.

国际专利证书及展览相片。

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In 2006, we attained technical invention letter of patent.

2006年，获得技术发明专利证书。

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He says the executives fear that being identified would promptly get them hit with a dreaded "Katz letter" claiming patent infringement.

FORBES: Get Katz

The Patent Office issued the letter in January, although it has only just emerged.

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