When enterprises carry on co-marketing and establish marketing alliance, the choice of partner is the first problem which they must face with.

企业进行合作营销，建立营销联盟，合作伙伴的选择是首先要面对的问题。

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When BMS was getting ready to start late stage clinical trials, they decided to seek a development and co-marketing partner.

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They found that the patent was more valuable than it initially appeared, because it would allow the biotechnology giant patent protection after its co-marketing deal with partner Pfizer ends.

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