EB: DIAMOND v. DIEHR, 450 U.S. 175 (1981)
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Revision as of 17:27, 6 February 2011 by Ebingle (Created page with "==The Situation== *Diehr files a patent for a process of constantly measuring the temperature inside a mold for curing synthetic rubber, and transfers the temperature measurement...")
- Diehr files a patent for a process of constantly measuring the temperature inside a mold for curing synthetic rubber, and transfers the temperature measurements into a computer that "repeatedly recalculates" the cure time using a mathematical equation which then signals a device to open the mold at the proper time.
- Patent originally rejected, examiner cites prior case (Gottchalk) in regards to the unpatentable nature of computer programs
- The decision was appealed, one Appeal agreed to reject the patent, the next reversed the opinion - Supreme Court steps in to make a decision
- Diehr's patent is valid; the subject matter is patentable.
- However, it was a very slit decision (5 to 4)
- The subject matter, when taken as a whole, constitutes the "transform and reduce into a different state or thing" criteria of a "process" - the subject matter clearly transforms raw rubber into cured precision products.
- The patentee's do not seek to "pre-empt" the formula (Arrhenius equation), but only to get rights to its use in conjunction with all of the other steps in the claimed process.
- The decision regarding the claims cannot be "altered by the fact that in several steps of the process a mathemetical equation and a programmed digital computer are used"
- While a scientific truth (the Arrhenius equation) cannot be patented, "a neovel and usefulstructure created with the aid of knowledge of scientific truth may be"
- The others misinterpret the claims of the patent
- The others confuse patentable subject matter with novelty - see last bullet point of previous section
- Diehr does not claim to have discovered anything new about the process for curing synthetic rubber
- The curing process is previously known, as is the general method of continuously measuring temperature
- The invention makes no contribution to the art that is not "entirely dependent upon the utilization of a computer in a familiar process" - thus, it should not be patentable