Obtaining a Plant Breeders’ Rights (PBR) certificate provides horticultural institutions the exclusive right to produce and reproduce new varieties, which directly motivate new plant variety innovations. This study investigates how the grant and surrender lag of PBR certificates is influenced by the crop type and applicant characteristics using the Canadian Food Inspection Agency horticultural crop PBR application data for the period 1992–2014. Results from the Fine and Gray subdistribution hazard model reveal that the grant lag and surrender lag of Canadian PBR applications significantly vary by the country of origin of the applicant, whether the applicant is a public institution or private company/individual, horticultural crop types, and the decades when applications are filed. The policy implications of the results provide useful information to stakeholders of the Canadian Plant Breeders’ Rights System regarding how the lifespan of PBRs is influenced by crop type and applicant characteristics.

中文翻译：

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园艺作物植物育种者权利申请的授予滞后和退缩滞后的决定因素：具有竞争风险的生存分析

获得植物育种者权利（PBR）证书为园艺机构提供了生产和繁殖新品种的专有权，这直接激发了新植物新品种的创新。这项研究使用1992-2014年间加拿大食品检验局的园艺作物PBR申请数据，研究了PBR证书的授予和退回滞后如何受到作物类型和申请人特征的影响。精细和灰色子分布危害模型的结果表明，加拿大PBR申请的授予滞后和退回滞后因申请人的原籍国而异，无论申请人是公共机构还是私人公司/个体，园艺作物类型，以及提出申请的几十年。