中国专利法早已颁布,并将于今年四月正式实施。在专利法实施过程中,有一项非常重要且工作量又十分繁重的工作,即专利文献的检索。这对于申请专利、专利审查以及有关新产品试制、工艺改革、外贸工作等都起着很重要的作用。众所周知,在申请专利或专利审查中,需要做大量的专利文献检索工作。对于某些技术领域如电子工业,专利检索少则三、五年,多则十多年,而对于象机械工业等某些技术领域,则年数更长,甚至于要查十几年、近二、三十年的专利文 The Chinese Patent Law has already been enacted and will be formally implemented in April this year. In the process of implementing the Patent Law, there is a very important and heavy workload, namely, searching of patent documents. This plays a very important role in applying for patents, examining patents, and trial production of new products, process reform and foreign trade work. As we all know, in the application for patent or patent examination, the need to do a lot of patent literature retrieval. For some technical fields such as the electronics industry, patent searches are conducted in as little as three to five years and as many as more than ten years. For some technical fields like mechanical industry, the number of years is even longer, or even more than ten years. Nearly two , Three decades of patent documents