"Patent specifications have indeed gotten dramatically longer over the past twenty years, but the growth curve is smooth and monotonic. It was well underway before Alice was decided. Using the population of 7.6 million published patent applications from 2005 through early 2025, this study finds specifications nearly doubled, from about 7,600 words to over 13,000."
"In 2008, I reported that patent documents were getting bigger in every dimension: longer specifications and more claims. Both trends moved in the same direction. The story was straightforward: patents were growing. The new data is a bit more complicated. Specifications continued their upward march, but claim counts peaked around 2005 and have been declining ever since."
A comprehensive analysis of 7.6 million published patent applications from 2005 through early 2025 reveals that patent specifications have grown dramatically, nearly doubling from approximately 7,600 words to over 13,000 words. However, this expansion in specification length has not been accompanied by an increase in claims. Average claim counts actually declined, reversing an upward trend documented in earlier studies. While the Supreme Court's 2014 Alice decision was expected to trigger significant changes in patent drafting practices, particularly in software and business methods, the data shows a smooth, continuous growth curve rather than a structural break around 2014-2015. Patent attorneys appear to have been increasing specification length well before Alice was decided.
#patent-specifications #patent-drafting-practices #alice-corp-v-cls-bank #patent-eligibility #patent-document-metrics
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