Cleveland Clinic Found. v. True Health Diagnostics LLC
Decision Date | 16 June 2017 |
Docket Number | 2016-1766 |
Citation | 859 F.3d 1352 |
Parties | The CLEVELAND CLINIC FOUNDATION, Cleveland Heartlab, Inc., Plaintiffs–Appellants v. TRUE HEALTH DIAGNOSTICS LLC, Defendant–Appellee |
Court | U.S. Court of Appeals — Federal Circuit |
Lawrence D. Rosenberg , Jones Day, Washington, DC, argued for plaintiffs-appellants. Also represented by Susan M. Gerber , Cleveland, OH.
Adam Louis Marchuk , Perkins Coie LLP, Chicago, IL, argued for defendant-appellee. Also represented by Michael Robert Osterhoff, Mark T. Smith, Caroline Ayres Teichner ; Dan L. Bagatell , Hanover, NH.
Before Lourie, Reyna, and Wallach, Circuit Judges.
The Cleveland Clinic Foundation and Cleveland Heartlab, Inc. accused True Health Diagnostics LLC of infringement of three patents that claim methods for testing for myeloperoxidase in a bodily sample and a fourth patent that claims a method for treating a patient that has cardiovascular disease. The United States District Court for the Northern District of Ohio found that the asserted claims of the three testing patents are not directed to patent-eligible subject matter and that Cleveland Clinic failed to state a claim of contributory or induced infringement of the fourth patent. For the reasons explained below, we affirm.
In 2003, researchers at the Cleveland Clinic Foundation developed methods for detecting the risk of cardiovascular disease in a patient. When an artery is damaged or inflamed, the body releases the enzyme myeloperoxidase, or MPO, in response. MPO is an early symptom of cardiovascular disease, and it can thus serve as an indicator of a patient's risk of cardiovascular disease.
The prior art taught that MPO could be detected in an atherosclerotic plaque or lesion that required a surgically invasive method. Another prior art method indirectly detected for MPO in blood. Yet another known method could detect MPO in blood but yielded results that were not predictive of cardiovascular disease. The inventors here purportedly discovered how to "see" MPO in blood and correlate that to the risk of cardiovascular disease.
The patents disclose methods for detecting MPO and correlating the results to cardiovascular risk.1 The patents disclose that "[m]yeloperoxidase activity may be determined by any of a variety of standard methods known in the art." E.g. , J.A. 39 at col. 8 ll. 32–33. These methods include colorimetric-based assay, flow cytometry, and enzyme-linked immunosorbent assay ("ELISA"). Additionally, the patents disclose MPO detection kits modified from commercially available kits "by including, for example, different cut-offs, different sensitivities at particular cut-offs, as well as instructions or other printed material for characterizing risk based upon the outcome of the assay." E.g. , J.A. 38 at col. 6 ll. 21–24.
In addition to ways to "see" MPO, the inventors developed a way to correlate MPO with risk of developing cardiovascular disease. To do this, the inventors compiled MPO data from a population to create a "predetermined" or "control" value. Then, using statistical methods, the inventors analyzed the data based on whether the person was "apparently healthy" or had some cardiovascular disease. E.g. , J.A. 45 at col. 20 ll. 32–43. Diagnosers could then use this data to determine whether a patient presents a risk of cardiovascular disease :
If the level of the present risk predictor in the test subject's bodily sample is greater than the predetermined value or range of predetermined values, the test subject is at greater risk of developing or having [cardiovascular disease ] than individuals with levels comparable to or below the predetermined value or predetermined range of values.
J.A. 46 at col. 21 ll. 37–42.
The '552 patent claims methods for characterizing a test subject's risk for cardiovascular disease by determining levels of MPO in a bodily sample and comparing that with the MPO levels in persons not having cardiovascular disease. The dependent claims limit the way MPO is detected and how the MPO values in the control subjects are evaluated. The district court analyzed claims 11, 14, and 15, which provide:
J.A. 50 at col. 30 ll. 48–62.
J.A. 51 at col. 31 ll. 8–23.
15. The method of claim 14, wherein the test subject's risk of developing a complication of atherosclerotic cardiovascular disease is determined by comparing levels of my[elo]peroxidase mass in the test subject's bodily sample to levels of myeloperoxidase mass in comparable samples obtained from the control subjects.
J.A. 51 at col. 31 ll. 24–29.
The '286 patent and '581 patent further claim ways of detecting MPO. The dependent claims of the '286 patent limit MPO detection by flow cytometry and further require detection of another compound, troponin. Other dependent claims of the '286 patent and '581 patent require detection of MPO byproducts. The district court analyzed claims 21 and 22 of the '286 patent and claim 5 of the '581 patent, which provide:
J.A. 71 at col. 23 l. 45–col. 24 l. 10.
J.A. 71 at col. 24 ll. 11–33.
J.A. 86 at col. 20 ll. 12–50.
The '260 patent builds on these patents and requires administration of a lipid lowering drug to a patient at risk of cardiovascular disease. Claim 1 of the '260 patent recites:
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