1. Anticipated licensing revenues:Some of these factors are "real economy" considerations, namely, patents that facilitate commercial exploitation are more valuable. Other factors are more in the vein of indicia. After all, e.g., there is nothing inherently valuable in a patent that has been examined and granted by a more senior examiner, unless such a patent is connected with activities that have "real economy" value. The relationship between these two types of factors is not explicitly spelled out in the paper.
2. Ability to trigger sales of end products:
3. Ability to generate add-on sales;
4. Ability to generate sales in new markets;
5. Stage of development of commercialization (the earlier the stage, the more risky the enterprise and the less valuable the patent);
6. Quality of law firm (e.g., measured by the degree of success of the law firm in sustaining an invalidity challenge;
7. Quality of patent examiner (an examiner with a longer tenure and a record of granting patents that withstand an invalidity challenge);
8. Size of portfolio being sold (a patent family is most valuable when the portfolio includes between 25 and 76 patent families).
In comparison, there is the view of Allison, Lemley, Moore and Trunkey in their oft-cited article, “Valuable Patents” (The Georgetown Law Journal, vol. 92, n. 3, March 2004). Here, the authors distinguish between why a patent is filed and what is the indicium of a valuable patent. In a word, some patents are worth more than others because the patent has greater commercial value. And what is the proxy for determining this class of more valuable patents? According to the authors, the best indicium of a valuable patent, as so characterized, is that it is litigated. The article then goes on to discuss various characteristics of litigated patents.
While some patents are commercially more valuable than others, and the best proxy for determining a valuable patent is whether or not it is litigated, the authors do recognize that there are a variety of factors that may give rise to a patent filing. Thus
1. Patentees are simply irrational in their filing and registration practice;I am not quite certain about what the ultimate payoff is in this kind of analysis. Both studies agree that the most valuable patents are those with superior commercial value. They depart in their consideration of the indicia of such patents. What one ultimately does with this information is not totally clear, especially when indicia do not imply causality. That said, the question becomes whether it is worthwhile engaging in an analysis to determine what is a valuable patent. Perhaps the readers can shed further light on the answer to this question.
2. Valuable patents are overlooked by their owners (the "Rembrandts in the Attic" syndrome);
3. Patents are licensed without the need to resort to litigation;
4. Patents are used as signals to consumers, competitors, and the like;
5. Patents are used defensively to protect against third parties with their own patents;
6. Patents are a form of lottery where a small number of patents account for the lion's share of the payoff for registration.