Court Opinion

ID: 4526622
Source: CourtListenerOpinion
Date Created: 2020-04-17 16:01:17.389941+00
Date Added: 2024-06-11T12:14:11.989934
License: Public Domain

Case: 19-1149   Document: 56     Page: 1   Filed: 04/17/2020

   United States Court of Appeals
       for the Federal Circuit
                 ______________________

 CARDIONET, LLC, BRAEMAR MANUFACTURING,
                      LLC,
              Plaintiffs-Appellants

                            v.

                  INFOBIONIC, INC,
                   Defendant-Appellee
                 ______________________

                       2019-1149
                 ______________________

     Appeal from the United States District Court for the
 District of Massachusetts in No. 1:17-cv-10445-IT, Judge
 Indira Talwani.
                  ______________________

                 Decided: April 17, 2020
                 ______________________

    CHING-LEE FUKUDA, Sidley Austin LLP, New York, NY,
 argued for plaintiffs-appellants. Also represented by
 BRADFORD J. BADKE, TODD MATTHEW SIMPSON; NATHAN A.
 GREENBLATT, Palo Alto, CA.

    GABRIEL BELL, Latham & Watkins LLP, Washington,
 DC, argued for defendant-appellee. Also represented by
 MAXIMILIAN A. GRANT; CHARLES SANDERS, Boston, MA.
                 ______________________

      Before DYK, PLAGER, and STOLL, Circuit Judges.
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2                            CARDIONET, LLC v. INFOBIONIC, INC

      Opinion for the court filed by Circuit Judge STOLL.
    Opinion dissenting in part and concurring in the result
                 filed by Circuit Judge DYK.
 STOLL, Circuit Judge.
      CardioNet, LLC and Braemar Manufacturing, LLC
 (collectively, “CardioNet”) appeal the district court’s dis-
 missal of their patent infringement complaint against In-
 foBionic, Inc. The district court held that the asserted
 claims of CardioNet’s U.S. Patent No. 7,941,207 are ineli-
 gible under 35 U.S.C. § 101, and therefore the complaint
 failed to state a claim under Federal Rule of Civil Proce-
 dure 12(b)(6). We conclude instead that the asserted
 claims of the ’207 patent are directed to a patent-eligible
 improvement to cardiac monitoring technology and are not
 directed to an abstract idea. Accordingly, we reverse the
 district court and remand for further proceedings.
                         BACKGROUND
                                I
      Anomalies in the electrical activity of a patient’s heart
 can indicate the presence of certain physiological condi-
 tions ranging from benign to life-threatening. Among those
 conditions are various different types of cardiac arrythmias
 (abnormal heart rhythms), including atrial fibrillation,
 atrial flutter, normal sinus rhythm irregularity, irregular-
 ity from various types of heart blocks, irregularity associ-
 ated with premature ventricular contractions, and
 ventricular tachycardia.
     Atrial fibrillation and atrial flutter involve “the loss of
 synchrony between the atria and the ventricles” of the
 heart. ’207 patent col. 1 ll. 24–25, 34–35. A patient may
 experience “short” or “sustained” episodes of atrial fibrilla-
 tion or atrial flutter. Short episodes “generally include be-
 tween two and 20 [heart]beats and may or may not have
 clinical significan[ce].” Id. at col. 5 ll. 33–35. By contrast,
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 sustained episodes “generally include more than 20 beats
 and may have relatively greater clinical significance.” Id.
 at col. 5 ll. 35–37. Atrial fibrillation “can lead to irregular
 ventricular beating as well as blood stagnation and clotting
 in the atria.” Id. at col. 1 ll. 27–28. Both atrial fibrillation
 and atrial flutter are “associated with stroke, congestive
 heart failure, and cardiomyopathy.” Id. at col. 1 ll. 31–32,
 40–42.
     Ventricular tachycardia, or V-TACH, is another form of
 cardiac arrythmia and is characterized by “a rapid succes-
 sion of ventricular contractions (e.g., between 140 and 220
 per minute) generally caused by an abnormal focus of elec-
 trical activity in a ventricle.” Id. at col. 9 ll. 41–44. Ven-
 tricular beats “are irregular beats that interrupt the
 normal heart rhythm” and that “may be precipitated by
 factors such as alcohol, tobacco, caffeine, and stress.” Id.
 at col. 9 ll. 10–12, 19–20. The “occurrence of ventricular
 beats can be used to identify ventricular tachycardia (e.g.,
 when there are three or more consecutive ventricular
 beats).” Id. at col. 9 ll. 16–19. V-TACH “can last from a
 few seconds to several days and can be caused by serious
 heart conditions such as a myocardial infarction.” Id.
 at col. 9 ll. 44–46.
     The ’207 patent is titled “Cardiac Monitoring” and
 claims priority to an application filed on January 21, 2004.
 The ’207 patent describes cardiac monitoring systems and
 techniques for detecting and distinguishing atrial fibrilla-
 tion and atrial flutter from other various forms of cardiac
 arrythmia. Electrical signals of the heart can be measured
 by placing electrodes on a patient’s skin. Id. at col. 1 ll. 17–
 20, col. 5 ll. 1–7. The patent teaches that its systems and
 techniques determine the beat-to-beat variability in heart
 rate over a series of successive heartbeats. Specifically,
 they determine the variability in heart rate “over a series
 of between 20 and 200 of the recent R to R intervals,” or the
 timing between “R-waves.” Id. at col. 2 ll. 4–6, 47–49. An
 R-wave is the peak of what is referred to as the “QRS
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4                             CARDIONET, LLC v. INFOBIONIC, INC

 complex” of an electrocardiogram signal, as illustrated in
 Figure 2 below. The QRS complexes (items 215, 220, and
 225 of Figure 2) of the signal correspond to the contractions
 of the ventricles. Id. at col. 4 ll. 53–58.
Id. Fig. 2. A schematic of the ’207 patent’s cardiac moni-
 toring system is shown below in Figure 8:
Id. Fig. 8. The written description explains that in detect-
 ing atrial fibrillation and atrial flutter, the systems and
 techniques include accounting for the presence of irregular
 ventricular beats, which are “negatively indicative” of
 atrial fibrillation and atrial flutter. Id. at col. 1 ll. 61–65,
 col. 2 ll. 53–61. The patent recognizes that the “occurrence
 of ventricular beats is generally unrelated to” atrial
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 fibrillation and atrial flutter, whereas it is indicative of V-
 TACH. Id. at col. 9 ll. 15–19. The patent’s systems and
 techniques also analyze information regarding the time pe-
 riod between ventricular contractions (i.e., the R to R inter-
 val) to detect atrial fibrillation and atrial flutter using non-
 linear statistical approaches. Id. at col. 1 ll. 49–54, col. 5
 ll. 40–44. Figure 10 depicts an embodiment of the ’207 pa-
 tent’s system employing these techniques:
Id. Fig. 10.
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6                            CARDIONET, LLC v. INFOBIONIC, INC

     Claims 1–3, 7, 10–12, and 22 are at issue on appeal.
 The claims are drawn to a device for detecting and report-
 ing the presence of atrial fibrillation or atrial flutter in a
 patient. Specifically, the device detects beat-to-beat timing
 of cardiac activity, detects premature ventricular beats (ir-
 regular beats that interrupt the normal heart rhythm), 1
 and determines the relevance of the beat-to-beat timing to
 atrial fibrillation or atrial flutter, taking into account the
 variability in the beat-to-beat timing caused by premature
 ventricular beats.
     Independent claim 1 recites:
     1. A device, comprising:
     a beat detector to identify a beat-to-beat timing of
     cardiac activity;
     a ventricular beat detector to identify ventricular
     beats in the cardiac activity;
     variability determination logic to determine a var-
     iability in the beat-to-beat timing of a collection of
     beats;
     relevance determination logic to identify a rele-
     vance of the variability in the beat-to-beat timing
     to at least one of atrial fibrillation and atrial flut-
     ter; and
     an event generator to generate an event when the
     variability in the beat-to-beat timing is identified
     as relevant to the at least one of atrial fibrillation

     1   For purposes of the motion to dismiss, the district
 court adopted CardioNet’s construction of the term “ven-
 tricular beats” to mean “premature ventricular beats that
 are irregular beats that interrupt the normal heart
 rhythm.” CardioNet, LLC v. InfoBionic, Inc., 348 F. Supp.
3d 87, 96 n.4 (D. Mass. 2018) (citation omitted).
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     and atrial flutter in light of the variability in the
     beat-to-beat timing caused by ventricular beats
     identified by the ventricular beat detector.
Id. at col. 12 ll. 12–27.
     Dependent claims 2, 3, 7, and 10–12 depend from
 claim 1 and further define the features of the device or its
 operation:
     2. The device of claim 1, wherein the relevance de-
     termination logic is to accommodate variability in
     the beat-to-beat timing caused by ventricular beats
     by weighting ventricular beats as being negatively
     indicative of the one of atrial fibrillation and atrial
     flutter.
     3. The device of claim 1, wherein the variability
     determination logic is to compare times between R-
     waves in three successive QRS complexes to deter-
     mine the variability in the beat-to-beat timing.
                             ***
     7. The device of claim 1, wherein the event gener-
     ator is to generate an event by performing opera-
     tions comprising: collecting data associated with
     the collection of beats; and transmitting the data
     associated with the collection of beats to a remote
     receiver.
                             ***
     10. The device of claim 1, wherein the relevance de-
     termination logic comprises logic to identify the rel-
     evance of the variability using a non-linear
     function of a beat-to-beat interval.
     11. The device of claim 1, wherein the beat detector
     comprises a QRS detector.
     12. The device of claim 1, further comprising a sen-
     sor that includes two or more body surface
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8                             CARDIONET, LLC v. INFOBIONIC, INC

     electrodes subject to one or more potential differ-
     ences related to cardiac activity.
Id. at col. 12 ll. 28–36, 52–56, col. 13 ll. 5–13.
     Similar to claim 2, dependent claim 22 recites
 “weighting” ventricular beats as being negatively indica-
 tive of atrial fibrillation or atrial flutter:
     22. The article of claim 20, 2 determining the rele-
     vance comprises: identifying a beat of the collection
     as a ventricular beat, and weighting the beat as be-
     ing negatively indicative of the one of atrial fibril-
     lation and atrial flutter.
Id. at col. 14 ll. 39–43.
      The ’207 patent describes a number of advantages
 achieved by the claimed cardiac monitoring device. For in-
 stance, by analyzing the beat-to-beat timing for atrial fi-
 brillation or atrial flutter while also taking into account the

     2   Claim 20 recites:
     An article comprising one or more machine-reada-
     ble media storing instructions operable to cause
     one or more machines to perform operations, the
     operations comprising: determining a beat-to-beat
     variability in cardiac electrical activity; determin-
     ing a relevance of the variability over a collection of
     beats to one of atrial fibrillation and atrial flutter
     using a non-linear function of a beat-to-beat inter-
     val; and identifying one of an atrial fibrillation
     event and an atrial flutter event based on the de-
     termined relevance, the event being a period in
     time when the information content of the cardiac
     electrical activity is of increased relevance to the
     one of atrial fibrillation and atrial flutter.
Id. at col. 14 ll. 12–24.
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 variability in the beat-to-beat timing caused by premature
 ventricular beats, the device can more accurately distin-
 guish atrial fibrillation and atrial flutter from other types
 of arrythmias and has “improved positive predictability” of
 atrial fibrillation and atrial flutter. Id. at col. 3 ll. 6–16.
 The written description states that when the device was
 used to analyze the MIT-BIH arrhythmia database in
 Cambridge, Massachusetts, “a sensitivity to [these two ar-
 rhythmias] in excess of 90% and a positive predictivity in
 excess of 96% were obtained.” Id. at col. 3 ll. 21–26. In
 other words, the device reports few false negatives and
 false positives when used to detect atrial fibrillation or
 atrial flutter. In addition, the device is able to identify
 “sustained” episodes of atrial fibrillation and atrial flutter,
 which have “increased clinical significance” compared to
 “short” episodes. Id. at col. 3 ll. 16–20. Moreover, the de-
 vice is “well-adapted to monitoring cardiac signals of am-
 bulatory patients who are away from controlled
 environments such as hospital beds or treatment facili-
 ties,” and whose cardiac signals “may be noisier and other-
 wise strongly impacted by the patients’ heightened levels
 of activity.” Id. at col. 3 ll. 27–34. The device is also “well-
 adapted to real-time monitoring of arrhythmia patients,
 where minimal delays in distinguishing between different
 types of cardiac arrhythmia can speed the delivery of any
 urgent medical care.” Id. at col. 3 ll. 35–39. Lastly, the
 device is advantageous in that it “require[s] minimal com-
 putational resources” and “do[es] not require training be-
 fore different types of cardiac arrhythmia can be
 distinguished.” Id. at col. 3 ll. 39–43.
                                II
     InfoBionic filed a motion to dismiss for failure to state
 a claim pursuant to Rule 12(b)(6), arguing that the as-
 serted claims are directed to patent-ineligible subject mat-
 ter under § 101. The district court determined that the
 ’207 patent claims are ineligible under § 101, applying the
 Supreme Court’s two-step framework for determining
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 patent eligibility. See Alice Corp. v. CLS Bank Int’l,
 573 U.S. 208 (2014).
     At step one, the district court concluded that the claims
 are directed to the abstract idea that atrial fibrillation and
 atrial flutter “can be distinguished by focusing on the vari-
 ability of the irregular heartbeat.” CardioNet, LLC v. Info-
 Bionic, Inc., 348 F. Supp. 3d 87, 93 (D. Mass. 2018) (District
 Court Op.); see also id. at 97 (further defining the abstract
 idea as “identifying” atrial fibrillation or atrial flutter “by
 looking at the variability in time between heartbeats and
 taking into account ventricular beats”). The district court
 rejected CardioNet’s argument that the claimed invention
 “represents an improvement to the function of cardiac mon-
 itoring devices,” including “more accurate and clinically
 significant” detection of atrial fibrillation and atrial flutter.
Id. at 93 (citation omitted). The district court concluded
 that although the “idea of using a machine to monitor and
 analyze heart beat variability and interfering beats so as
 to alert the user of potential [atrial fibrillation or atrial
 flutter] events may well improve the field of cardiac telem-
 etry,” CardioNet “d[id] not identify improvements to any
 particular computerized technology.” Id.
     CardioNet appeals. We have jurisdiction pursuant to
 28 U.S.C. § 1295(a)(1).
                          DISCUSSION
      We apply regional circuit law when reviewing the dis-
 trict court’s dismissal of a complaint for failure to state a
 claim. Athena Diagnostics, Inc. v. Mayo Collaborative
 Servs., LLC, 915 F.3d 743, 749 (Fed. Cir. 2019). The First
 Circuit reviews such dismissals de novo, accepting as true
 all well-pleaded facts alleged in the complaint and drawing
 all reasonable inferences in favor of the non-moving party.
 In re Loestrin 24 Fe Antitrust Litig., 814 F.3d 538, 549
 (1st Cir. 2016). Patent eligibility under § 101 is a question
 of law that may contain underlying issues of fact. See
 Aatrix Software, Inc. v. Green Shades Software, Inc.,
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 882 F.3d 1121, 1125 (Fed. Cir. 2018); Berkheimer v. HP
 Inc., 881 F.3d 1360, 1365 (Fed. Cir. 2018). We review de
 novo a determination that a claim is directed to patent-in-
 eligible subject matter. Berkheimer, 881 F.3d at 1365.
                                I
      Section 101 provides that “[w]hoever invents or discov-
 ers any new and useful process, machine, manufacture, or
 composition of matter, or any new and useful improvement
 thereof, may obtain a patent therefor.” 35 U.S.C. § 101.
 The Supreme Court has identified three types of subject
 matter that are not patent-eligible: “Laws of nature, natu-
 ral phenomena, and abstract ideas are not patentable.” Al-
 ice, 573 U.S. at 216 (quoting Ass’n for Molecular Pathology
 v. Myriad Genetics, Inc., 569 U.S. 576, 589 (2013)).
      In Alice, the Supreme Court articulated a two-step test
 for examining patent eligibility when a patent claim is al-
 leged to involve one of these three types of subject matter.
 The “abstract ideas” category, the subject matter at issue
 in this case, embodies “the longstanding rule that ‘[a]n idea
 of itself is not patentable.’” Id. at 218 (alteration in origi-
 nal) (quoting Gottschalk v. Benson, 409 U.S. 63, 67 (1972)).
 The Supreme Court recognized, however, that “[a]t some
 level, ‘all inventions . . . embody, use, reflect, rest upon, or
 apply laws of nature, natural phenomena, or abstract
 ideas.’” Id. at 217 (alteration in original) (quoting Mayo
 Collaborative Servs. v. Prometheus Labs., Inc., 566 U.S. 66,
 71 (2012)). “Thus, an invention is not rendered ineligible
 for patent simply because it involves an abstract concept.”
Id. Rather, “applications” of abstract concepts “to a new
 and useful end . . . remain eligible for patent protection.”
Id. (quoting Benson, 409 U.S. at 67).
     At step one, we consider the claims “in their entirety to
 ascertain whether their character as a whole is directed to
 excluded subject matter.” McRO, Inc. v. Bandai Namco
 Games Am. Inc., 837 F.3d 1299, 1312 (Fed. Cir. 2016) (quot-
 ing Internet Patents Corp. v. Active Network, Inc., 790 F.3d
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 12                           CARDIONET, LLC v. INFOBIONIC, INC

 1343, 1346 (Fed. Cir. 2015)); see also Elec. Power Grp., LLC
 v. Alstom S.A., 830 F.3d 1350, 1353 (Fed. Cir. 2016) (“[W]e
 have described the first-stage inquiry as looking at the ‘fo-
 cus’ of the claims, their ‘character as a whole.’” (citations
 omitted)). We also consider the patent’s written descrip-
 tion, as it informs our understanding of the claims. See
 Chamberlain Grp., Inc. v. Techtronic Indus. Co., 935 F.3d
1341, 1346 (Fed. Cir. 2019) (“[T]he specification [is] helpful
 in illuminating what a claim is ‘directed to.’” (alterations in
 original) (citation omitted)). “If the claims are not directed
 to a patent-ineligible concept under Alice step 1, ‘the claims
 satisfy § 101 and we need not proceed to the second step.’”
 Data Engine Techs. LLC v. Google LLC, 906 F.3d 999, 1007
 (Fed. Cir. 2018) (quoting Core Wireless Licensing S.A.R.L.
 v. LG Elecs., Inc., 880 F.3d 1356, 1361 (Fed. Cir. 2018)).
     “If the claims are directed to a patent-ineligible con-
 cept, however, we next consider Alice step two.” Id. In this
 step, we consider “the elements of each claim both individ-
 ually and ‘as an ordered combination’ to determine
 whether the additional elements ‘transform the nature of
 the claim’ into a patent-eligible application.”        Alice,
573 U.S. at 217 (quoting Mayo, 566 U.S. at 78–79). This
 second step is “a search for an ‘inventive concept’—i.e., an
 element or combination of elements that is ‘sufficient to en-
 sure that the patent in practice amounts to significantly
 more than a patent upon the [ineligible concept] itself.’” Id.
 at 217–18 (alteration in original) (quoting Mayo, 566 U.S.
 at 72–73).
                                II
     We begin our analysis with Alice step one. In doing so,
 we look to whether the claims “focus on a specific means or
 method that improves the relevant technology or are in-
 stead directed to a result or effect that itself is the abstract
 idea and merely invoke generic processes and machin-
 ery.” McRO, 837 F.3d at 1314 (citations omitted). We hold
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 that the asserted claims of the ’207 patent are directed to
 patent-eligible subject matter.
                                A
     When read as a whole, and in light of the written de-
 scription, we conclude that claim 1 of the ’207 patent is di-
 rected to an improved cardiac monitoring device and not to
 an abstract idea. In particular, the language of claim 1 in-
 dicates that it is directed to a device that detects beat-to-
 beat timing of cardiac activity, detects premature ventric-
 ular beats, and determines the relevance of the beat-to-
 beat timing to atrial fibrillation or atrial flutter, taking into
 account the variability in the beat-to-beat timing caused by
 premature ventricular beats identified by the device’s ven-
 tricular beat detector. In our view, the claims “focus on a
 specific means or method that improves” cardiac monitor-
 ing technology; they are not “directed to a result or effect
 that itself is the abstract idea and merely invoke generic
 processes and machinery.” McRO, 837 F.3d at 1314 (cita-
 tions omitted).
     The written description confirms our conclusion. It ex-
 plains that, by identifying “variability in the beat-to-beat
 timing . . . as relevant to the at least one of atrial fibrilla-
 tion and atrial flutter in light of the variability in the beat-
 to-beat timing caused by ventricular beats identified by the
 ventricular beat detector,” the claimed invention achieves
 multiple technological improvements. First and foremost,
 the device more accurately detects the occurrence of atrial
 fibrillation and atrial flutter—as distinct from V-TACH
 and other arrhythmias—and allows for more reliable and
 immediate treatment of these two medical conditions.
 ’207 patent col. 3 ll. 6–16, 21–26, 35–39. Indeed, the writ-
 ten description reports that when analyzing real-world ar-
 rythmia data, the device demonstrated both high “positive
 predictivity” of, and high “sensitivity” to, atrial fibrillation
 and atrial flutter, meaning that it effectively avoids false
 positives and false negatives, respectively, in detecting
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 these two conditions. Id. at col. 3 ll. 21–26. In addition,
 the device is able to identify sustained episodes of atrial
 fibrillation and atrial flutter that have “increased clinical
 significance.” Id. at col. 3 ll. 16–20.
     The dependent claims are similarly directed to patent-
 eligible subject matter, as they further specify the physical
 features or operation of the device of claim 1. For instance,
 claim 2 additionally requires “weighting” ventricular beats
 “as being negatively indicative of the one of atrial fibrilla-
 tion and atrial flutter.” Claim 22, which depends from in-
 dependent claim 20, recites a similar limitation. Claim 3
 is additionally directed to “compar[ing] times between R-
 waves in three successive QRS complexes to determine the
 variability in the beat-to-beat timing.” Claim 7 is addition-
 ally directed to “transmitting the data associated with the
 collection of beats to a remote receiver.” Claim 10 addition-
 ally requires “using a non-linear function of a beat-to-beat
 interval.” Claim 11 is additionally directed to the use of a
 “QRS detector.” Finally, claim 12 is additionally directed
 to using “a sensor that includes two or more body surface
 electrodes subject to one or more potential differences re-
 lated to cardiac activity.” Thus, each of these dependent
 claims narrows the device’s specific technical features or
 operations.
     We agree with CardioNet that the claims of the ’207 pa-
 tent are akin to claims we have previously determined are
 directed to technological improvements. For instance, the
 asserted claims are similar to those we held eligible in Vis-
 ual Memory LLC v. NVIDIA Corp., 867 F.3d 1253 (Fed. Cir.
 2017). There, the claims recited a “computer memory sys-
 tem” that used “programmable operational characteristics”
 of a computer’s cache memory based on the type of proces-
 sor connected to the memory system. Id. at 1257. On ap-
 peal from a dismissal under Rule 12(b)(6), we held under
 Alice step one that the claims were “directed to an im-
 proved computer memory system, not to the abstract idea
 of categorical data storage.” Id. at 1259. Important to our
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 determination was the fact that the written description de-
 scribed technical “advantages offered by” the claimed
 memory system. Id. at 1259–60. In particular, the written
 description explained that the claimed system was able to
 accommodate “different types of processors . . . without sig-
 nificantly compromising their individual performance” and
 “outperform[ed] a prior art memory system . . . armed with
 ‘a cache many times larger than the cumulative size of the
 subject caches.’” Id. at 1259 (citations omitted). Weighing
 “all factual inferences drawn from the specification . . . in
 favor of Visual Memory, the non-moving party,” we re-
 versed the district court’s decision that the claims were in-
 eligible. Id. at 1262.
     Similarly, here, the ’207 patent’s written description
 identifies a number of advantages gained by the elements
 recited in the claimed cardiac monitoring device. By ana-
 lyzing the “variability in the beat-to-beat timing” for “atrial
 fibrillation and atrial flutter in light of the variability in
 the beat-to-beat timing caused by ventricular beats identi-
 fied by the ventricular beat detector,” the claimed inven-
 tion more accurately detects the occurrence of atrial
 fibrillation and atrial flutter, as distinct from V-TACH and
 other arrhythmias. ’207 patent col. 3 ll. 6–16, 21–26, 35–
 39. We accept those statements as true and consider them
 important in our determination that the claims are drawn
 to a technological improvement.
     The ’207 patent claims are also similar to those we held
 eligible in McRO. The patent at issue in McRO claimed a
 “method for automatically animating lip synchronization
 and facial expression of three-dimensional characters.”
837 F.3d at 1307. We reversed the district court’s grant of
 judgment on the pleadings under Federal Rule of Civil Pro-
 cedure 12(c) that the claims were directed to an abstract
 idea. We held under Alice step one that the claims were
 directed to “a specific asserted improvement in computer
 animation, i.e., the automatic use of rules of a particular
 type.” Id. at 1314. The written description confirmed that
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 16                         CARDIONET, LLC v. INFOBIONIC, INC

 the “claimed improvement” was “allowing computers to
 produce accurate and realistic lip synchronization and fa-
 cial expressions in animated characters that previously
 could only be produced by human animators.” Id. at 1313
 (internal quotation marks and citation omitted). We re-
 jected the argument that the claims “simply use a com-
 puter as a tool to automate conventional activity” because
 there was no evidence in the record that “the process pre-
 viously used by animators [wa]s the same as the process
 required by the claims.” Id. at 1314. The specification
 made “no suggestion that animators were previously em-
 ploying the type of rules required by” the claims. Id. In
 fact, the evidence in the record showed that the traditional
 process and claimed method produced realistic animations
 of facial movements in fundamentally different ways. Id.
     In this case, there is likewise no suggestion in the
 ’207 patent’s written description that doctors were “previ-
 ously employing” the techniques performed on the claimed
 device. Nothing in the record in this case suggests that the
 claims merely computerize pre-existing techniques for di-
 agnosing atrial fibrillation and atrial flutter. Moreover, as
 in McRO, the written description of the ’207 patent con-
 firms that the asserted claims are directed to a specific
 technological improvement—an improved medical device
 that achieves speedier, more accurate, and clinically signif-
 icant detection of two specific medical conditions out of a
 host of possible heart conditions.
                              B
     At the heart of the district court’s erroneous step one
 analysis is the incorrect assumption that the claims are di-
 rected to automating known techniques. See District Court
 Op., 348 F. Supp. 3d at 93. InfoBionic reiterates this argu-
 ment on appeal, asserting that “the claims are drawn to
 automating basic diagnostic processes that doctors have
 long used.” Appellee’s Br. 2; see also id. at 11 (“The claims
 recite the basic steps that any doctor could (and would)
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 perform to make such diagnoses—collecting and analyzing
 a patient’s heartbeat data.”); id. at 12 (“[T]he claims use
 computers as mere tools to automate basic human steps.”);
id. at 20 (“[C]laim 1 is nothing more than a computerized
 version of a doctor’s approach to diagnosis.”). But the writ-
 ten description does not disclose that doctors performed the
 same techniques as the claimed device in diagnosing atrial
 fibrillation or atrial flutter. Indeed, as discussed above,
 nothing in the record supports the district court’s fact find-
 ing (and InfoBionic’s assertion) that doctors long used the
 claimed diagnostic processes. The district court’s assump-
 tion also seems incongruous with the claimed subject mat-
 ter. For example, it is difficult to fathom how doctors
 mentally or manually used “logic to identify the relevance
 of the variability [in the beat-to-beat timing] using a non-
 linear function of a beat-to-beat interval” as required by
 claim 10. For all these reasons, the district court erred by
 holding that the claims are abstract based on this errone-
 ous finding.
      Likewise, the district court erred by disregarding the
 written description’s recitation of the advantages of the
 claimed invention. In opposing InfoBionic’s motion, Cardi-
 oNet had argued that, based on the patent’s disclosure, the
 claimed invention “achieve[s] more accurate and clinically
 significant” detection of atrial fibrillation and atrial flutter,
 and thereby constitutes an improvement to cardiac moni-
 toring technology as opposed to an abstract idea. District
 Court Op., 348 F. Supp. 3d at 93 (citation omitted). The
 district court dismissed this argument, concluding that
 CardioNet did “not identify improvements to any particu-
 lar computerized technology.” Id. On a motion to dismiss
 under Rule 12(b)(6), however, the district court must con-
 strue all facts and draw all reasonable inferences in favor
 of CardioNet, the non-moving party. See Athena, 915 F.3d
 at 749. Here, there is no record evidence undermining the
 statements in the written description concerning the bene-
 fits of the claimed device. The district court’s finding is
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 18                          CARDIONET, LLC v. INFOBIONIC, INC

 contrary to fact and fails to draw all reasonable inferences
 in CardioNet’s favor.
      Furthermore, the district court erred in analogizing the
 ’207 patent claims to certain ineligible “computer-imple-
 mented claims for collecting and analyzing data to find spe-
 cific events.” District Court Op., 348 F. Supp. 3d at 92–93.
 In particular, the district court found comparable our deci-
 sions in Berkheimer and FairWarning IP, LLC v. Iatric
 Systems, Inc., 839 F.3d 1089 (Fed. Cir. 2016). Generalizing
 the asserted claims as being directed to collecting, analyz-
 ing, and reporting data is inconsistent with our instruction
 that courts “‘be careful to avoid oversimplifying the claims’
 by looking at them generally and failing to account for the
 specific requirements of the claims.” McRO, 837 F.3d
 at 1313 (citations omitted). In stark contrast to the claims
 in Berkheimer and FairWarning IP, the claims of the
 ’207 patent do not merely collect electronic information,
 display information, or embody mental processes. Indeed,
 the claims of the ’207 patent do not “fit into the familiar
 class of claims that” focus on “certain independently ab-
 stract ideas that use computers as tools.” SAP Am., Inc.
 v. InvestPic, LLC, 898 F.3d 1161, 1168 (Fed. Cir. 2018)
 (quoting Elec. Power, 830 F.3d at 1354). Rather, as dis-
 cussed above, they fit into the class of claims that focus on
 “an improvement in computers [and other technologies] as
 tools.” Id. Accordingly, the district court’s and InfoBionic’s
 reliance on these cases was misplaced.
     Because we conclude under Alice step one that the as-
 serted claims of the ’207 patent are not directed to an ab-
 stract idea, we do not reach Alice step two. See Data
 Engine, 906 F.3d at 1011; Visual Memory, 867 F.3d at 1262.
 The claims are patent eligible under § 101.
                               C
     Finally, we turn to a dispute raised in the parties’
 briefs and oral argument, namely, whether we can resolve
 this Alice step one issue at the Rule 12(b)(6) stage without
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 CARDIONET, LLC v. INFOBIONIC, INC                             19

 remanding to assess the state of the art as of the invention
 date to determine whether the asserted claims are directed
 to automating a practice long used by doctors. Compare
 Appellants’ Br. 47 (noting the absence of prior art or expert
 testimony in the record demonstrating that the claims fail
 to improve cardiac monitoring technology) and Oral Arg.
 at 9:16–48,      http://oralarguments.cafc.uscourts.gov/de-
 fault.aspx?fl=2019-1149.mp3 (“There are factual determi-
 nations that need to be made here on what was done by
 doctors . . . . Did they negatively weight this premature
 ventricular beats in their diagnosis of atrial fibrillation?”)
 with Appellee’s Br. 49 (“Here . . . the intrinsic record is dis-
 positive.”). We conclude that a remand is unnecessary. Al-
 ice step one presents a legal question that can be answered
 based on the intrinsic evidence.
      The analysis under Alice step one is whether the claims
 as a whole are “directed to” an abstract idea, regardless of
 whether the prior art demonstrates that the idea or other
 aspects of the claim are known, unknown, conventional,
 unconventional, routine, or not routine. See Diamond
 v. Diehr, 450 U.S. 175, 188–89 (1981) (“The ‘novelty’ of any
 element or steps in a process, or even of the process itself,
 is of no relevance in determining whether the subject mat-
 ter of a claim falls within the § 101 categories of possibly
 patentable subject matter.”); Am. Axle & Mfg., Inc.
 v. NeapCo Holdings LLC, 939 F.3d 1355, 1362 n.3
 (Fed. Cir. 2019) (“[I]t makes no difference to the section 101
 analysis whether the use of [ineligible subject matter] was
 known in the prior art.”); Data Engine, 906 F.3d at 1011
 (“The eligibility question is not whether anyone has ever
 used tabs to organize information. That question is re-
 served for §§ 102 and 103. The question of abstraction is
 whether the claim is ‘directed to’ the abstract idea itself.”).
      Indeed, subject matter eligibility under § 101 ordinar-
 ily is merely the first step in determining the patentability
 of a claim. A patent claim must meet other statutory crite-
 ria to be valid, including that its claimed invention be novel
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 20                          CARDIONET, LLC v. INFOBIONIC, INC

 and nonobvious over the prior art, as well as described ad-
 equately to enable its use. See 35 U.S.C. §§ 102, 103, 112.
 While “it may later be determined that [CardioNet’s
 claimed invention] is not deserving of patent protection be-
 cause it fails to satisfy the statutory conditions of novelty
 under § 102 or nonobviousness under § 103,” Diehr,
450 U.S. at 191, based on prior art not yet part of the rec-
 ord, the novelty or nonobviousness of the invention has lit-
 tle to no bearing on the question of what the claims are
 “directed to.”
     It is true, as the dissent contends, that the Supreme
 Court in Alice and Bilski v. Kappos identified as abstract
 claims directed to performing on a computer “fundamental
 economic practice[s] long prevalent in our system of com-
 merce.” Alice, 573 U.S. at 219 (holding ineligible patent
 claims directed to the concept of “intermediated settle-
 ment,” i.e., the use of a third party to mitigate the risk that
 only one party to an agreed-upon financial exchange will
 satisfy its obligation); Bilski v. Kappos, 561 U.S. 593, 611
 (2010) (holding ineligible claims of a patent application di-
 rected to the “basic concept of hedging, or protecting
 against risk,” in the field of commodities trading).
     But, in neither Bilski nor Alice did the Court rely on an
 examination of the prior art as part of its step one inquiry.
 This is consistent with the other cases cited by the dissent.
 In determining what the claims are directed to and
 whether they are directed to an abstract idea, a court may
 well consult the plain claim language, written description,
 and prosecution history and, from these sources, conclude
 that the claims are directed to automating a longstanding
 or fundamental practice.
     Similarly, the court may consult the intrinsic evidence
 and conclude that the claims are directed to improving the
 functionality of a computer or network. The court need not
 consult the prior art to see if, in fact, the assertions of im-
 provement in the patent’s written description are true.
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 CARDIONET, LLC v. INFOBIONIC, INC                            21

 Rather, “[t]he § 101 patent-eligibility inquiry is only a
 threshold test,” Bilski, 561 U.S. at 602, and we reserve for
 §§ 102 and 103 purposes our comparison of the prior art
 and the claims to determine if the claims are, in fact, an
 improvement over the prior art.
      This court’s decision in Enfish, LLC v. Microsoft Corp.,
 822 F.3d 1327 (Fed. Cir. 2016), confirms this point. In En-
 fish, we stated that “the first step in the Alice inquiry . . .
 asks whether the focus of the claims is on the specific as-
 serted improvement in computer capabilities” or, instead,
 on an abstract idea “for which computers are invoked
 merely as a tool.” Id. at 1335–36 (emphasis added). In
 making this inquiry, we examined the patents’ shared writ-
 ten description, including its teachings of the “multiple
 benefits flow[ing] from th[e] design” of the claimed self-ref-
 erential table for a computer database. Id. at 1333. Our
 conclusion that the claims were directed to a patent-eligi-
 ble invention was based on the patents’ teachings that the
 claimed “self-referential table functions differently than
 conventional database structures” and “achieves other ben-
 efits over conventional databases, such as increased flexi-
 bility, faster search times, and smaller memory
 requirements.” Id. at 1337; see also id. at 1339 (“The spec-
 ification’s disparagement of conventional data structures,
 combined with language describing the ‘present invention’
 as including the features that make up a self-referential
 table, confirm that our characterization of the ‘invention’
 for purposes of the § 101 analysis has not been deceived by
 the ‘draftsman’s art.’”); BASCOM Global Internet Servs.,
 Inc. v. AT&T Mobility LLC, 827 F.3d 1341, 1348 (Fed. Cir.
 2016) (concluding that, based on the claim language and
 written description, the claims were directed to the ab-
 stract idea of filtering content on the Internet); FairWarn-
 ing IP, 839 F.3d at 1093–95 (concluding that, based on the
 claims, written description, and the patentee’s failure to
 contend that the claims were “directed to an improvement
 in the way computers operate,” the claims were directed to
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 22                          CARDIONET, LLC v. INFOBIONIC, INC

 an abstract idea of “collecting and analyzing information to
 detect misuse and notifying a user when misuse is de-
 tected” (citation omitted)). Thus, the Alice step one inquiry
 in Enfish and our other decisions began, and ended, with
 the patent itself.
      Contrary to the dissent’s suggestions, we do not hold
 today that it is impermissible for courts to “look[] outside
 the intrinsic evidence” as part of their Alice step one in-
 quiry, Dissent Op. 9, or that all evidence presented by the
 parties that doctors have long used the claimed techniques
 would be irrelevant to the inquiry in this case. It is within
 the trial court’s discretion whether to take judicial notice
 of a longstanding practice where there is no evidence of
 such practice in the intrinsic record. But there is no basis
 for requiring, as a matter of law, consideration of the prior
 art in the step one analysis in every case. If the extrinsic
 evidence is overwhelming to the point of being indisputa-
 ble, then a court could take notice of that and find the
 claims directed to the abstract idea of automating a funda-
 mental practice, see Bilski, 561 U.S. at 611—but the court
 is not required to engage in such an inquiry in every case.
     Thus, we simply clarify that step one of the Alice frame-
 work does not require an evaluation of the prior art or facts
 outside of the intrinsic record regarding the state of the art
 at the time of the invention. Neither Bilski, Alice, nor this
 court’s precedent endorses such an analysis. The dissent
 also contends that “numerous cases decided by our court
 held that claims were abstract because they claimed
 longstanding practices.” Dissent Op. 7. That unqualified
 statement is simply incorrect. Accordingly, our analysis at
 Alice step one involves examining the patent claims in view
 of the plain claim language, statements in the written de-
 scription, and the prosecution history, if relevant. See, e.g.,
 Athena, 915 F.3d at 750 (“To determine whether a claim is
 directed to an ineligible concept, we have frequently con-
 sidered whether the claimed advance improves upon a
 technological process or merely an ineligible concept, based
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 CARDIONET, LLC v. INFOBIONIC, INC                           23

 on both the written description and the claims.” (emphasis
 added) (citations omitted)); Chamberlain Grp., 935 F.3d
 at 1346 (“[W]hile the specification may help illuminate the
 true focus of a claim, when analyzing patent eligibility, re-
 liance on the specification must always yield to the claim
 language in identifying that focus.” (citation omitted)). The
 analysis does not require a review of the prior art or facts
 outside of the intrinsic record regarding the state of the art
 at the time of the invention. Based on our review of the
 intrinsic record, the ’207 patent claims are not directed to
 a patent-ineligible abstract idea. Therefore, reversal is ap-
 propriate.
                         CONCLUSION
     For the foregoing reasons, we reverse the district
 court’s determination that the asserted claims of the
 ’207 patent recite patent-ineligible subject matter and re-
 mand for further proceedings.
                REVERSED AND REMANDED
                            COSTS
     Costs to Appellants.
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    United States Court of Appeals
        for the Federal Circuit
                   ______________________

  CARDIONET, LLC, BRAEMAR MANUFACTURING,
                       LLC,
               Plaintiffs-Appellants

                              v.

                    INFOBIONIC, INC,
                     Defendant-Appellee
                   ______________________

                         2019-1149
                   ______________________

     Appeal from the United States District Court for the
 District of Massachusetts in No. 1:17-cv-10445-IT, Judge
 Indira Talwani.
                  ______________________

 DYK, Circuit Judge, dissenting in part and concurring in
 the result.
     This is a routine case easily resolved by existing prece-
 dent. Under that approach, I agree with the majority that
 the claims have not been shown to be patent ineligible un-
 der section 101. I dissent in part because the majority ad-
 dresses issues never argued by the parties and appears to
 suggest approaches not consistent with Supreme Court
 and circuit authority.
                               I
     The ’207 patent is directed to an improved cardiac mon-
 itoring device. Defendant contended that the device is
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 2                           CARDIONET, LLC v. INFOBIONIC, INC

 section 101 ineligible because it amounts to nothing more
 than using a computer to analyze heart function data in
 the same way that had long been done by physicians with-
 out a computer. See Appellee’s Br. 2 (“[T]hose claims are
 directed to the abstract idea of identifying commonplace
 heart conditions in the same way doctors have long
 done . . . .”). The district court agreed, relying on the pa-
 tent specification to find the claims directed to an abstract
 idea.
      Our court has repeatedly held that simply computeriz-
 ing data analysis previously performed without a computer
 does not give rise to a patent-eligible invention at Alice step
 one. As we explained in Intellectual Ventures I LLC v. Cap-
 ital One Bank (USA), 792 F.3d 1363 (Fed. Cir. 2015), “our
 precedent is clear that merely adding computer functional-
 ity to increase the speed or efficiency of the process does
 not confer patent eligibility on an otherwise abstract idea.”
Id. at 1370.
     On appeal, the patentee argues that “[t]he key factual
 dispute is . . . whether the claims are directed to an im-
 provement to existing technology and contain an inventive
 concept . . . or whether the claims are ‘nothing more than a
 computerized version of a doctor’s approach to diagnosis,’
 as [defendant] contends.” Reply Br. 34. It concludes that
 “the record lacks any evidence that supports the district
 court’s key factual finding.” Appellant’s Br. 49.
     The majority concludes, and I agree, that the patentee
 is correct: the defendant has not established that the pa-
 tent simply computerizes the use of longstanding data
 analysis. On appeal, the defendant does not argue that the
 case should be remanded to allow the defendant to develop
 a fuller record. See, e.g., Appellee’s Br. 47 (“There are no
 relevant factual disputes.”); Oral Arg. at 22:25–41 (stating
 that “it doesn’t matter” that the record does not clearly
 show that the claimed technique was long prevalent). In-
 stead the defendant argues only that the intrinsic evidence
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 CARDIONET, LLC v. INFOBIONIC, INC                               3

 shows that “the claims are drawn to automating basic di-
 agnostic processes that doctors have long used.” Appellee’s
 Br. 2; see also id. at 19–20; id. at 49 (“Here . . . the intrinsic
 record is dispositive . . . .”); id. at 50 (same). Since the in-
 trinsic record does not establish this, I agree that no re-
 mand is required, and that the asserted claims have not
 been shown to be patent ineligible.
                                 II
      My problem with the majority opinion is that, after de-
 termining in Parts II.A and II.B that the record does not
 support the defendant’s contentions, it goes beyond this
 simple resolution in Part II.C. The majority states that it
 is “not hold[ing] . . . that it is impermissible for courts to
 ‘look[] outside the intrinsic evidence’ as part of their Alice
 step one inquiry, or that all evidence presented by the par-
 ties that doctors have long used the claimed techniques
 would be irrelevant to the inquiry in this case,” but the ma-
 jority concludes that “step one of the Alice framework does
 not require an evaluation of the prior art or facts outside of
 the intrinsic record regarding the state of the art at the
 time of the invention.” Maj. Op. 22 (citation omitted) (quot-
 ing Dissent Op. 9). At the same time, the majority states
 “[i]t is within the trial court’s discretion whether to take
 judicial notice of a longstanding practice where there is no
 evidence of such practice in the intrinsic record. But there
 is no basis for requiring, as a matter of law, consideration
 of the prior art in the step one analysis in every case.” Id.
     Thus, on the one hand, the majority recognizes that es-
 tablishing that a practice is longstanding is clearly rele-
 vant, but on the other hand seems to suggest undefined
 limits on the use of extrinsic evidence to determine
 whether a practice was longstanding in the prior art at the
 time of the invention. I agree that the § 101 inquiry is dif-
 ferent from § 102/103 analysis, and the mere fact that a
 prior art reference discloses an idea does not make it
 longstanding. But limiting the use of extrinsic evidence to
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 4                           CARDIONET, LLC v. INFOBIONIC, INC

 establish that a practice is longstanding would be incon-
 sistent with authority. No case has ever said that the na-
 ture of a longstanding practice cannot be determined by
 looking at the prior art. I respectfully dissent from the ma-
 jority’s inclusion of this confusing dicta in Part II.C of the
 opinion.
     First, the majority’s views are dicta. As discussed
 above, neither party in the briefing before this court re-
 quested a remand to the district court to make the deter-
 mination of whether the doctors had long practiced the
 claimed process. 1 The parties’ focus was almost entirely on
 whether the existing record showed this was a longstand-
 ing practice. 2

     1     The only reference concerning a possible remand
 was made by the patent owner at oral argument. See Oral
 Arg. at 9:16–48 (“There are factual determinations that
 need to be made here on what was done by doctors . . . . Did
 they negatively weight th[ese] premature ventricular beats
 in their diagnosis of atrial fibrillation?”).
     2     See also Appellant’s Br. 49 (“[T]he record lacks any
 evidence that supports the district court’s key factual find-
 ing.”); Appellee’s Br. 29 (“[T]he specification makes plain
 that the purported advantages [of the claimed de-
 vice] . . . are rooted in the abstract idea itself—the ability
 to distinguish [atrial fibrillation and atrial flutter] from
 other cardiac irregularities by accounting for premature
 ventricular beats, which is the type of mental process doc-
 tors long performed.”); Reply Br. 23 (“InfoBionic . . . falsely
 asserts without evidentiary support that the ’207 patent
 merely computerized routine diagnostic methods, [and] er-
 roneously ignores the specification’s teachings about the
 benefits of the invention . . . .”); id. at 1 (“In addition to
 lacking any evidence that proves the ’207 patent merely
 computerizes conventional techniques, InfoBionic ignores
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 CARDIONET, LLC v. INFOBIONIC, INC                           5

       Second, both parties agreed that longstanding practice
 was relevant to the Alice step one analysis. Oral Arg. at
 9:16–37 (“There are factual determinations that need to be
 made here on what was done by doctors.” (Appellant) (em-
 phasis added)); Reply 34 (“The key factual dispute
 is . . . whether the claims are directed to an improvement
 to existing technology and contain an inventive con-
 cept . . . or whether the claims are ‘nothing more than a
 computerized version of a doctor’s approach to diagnosis,’
 as InfoBionic contends.”). Neither party argued that ex-
 trinsic evidence of the prior art is irrelevant to determining
 whether a practice is longstanding. Indeed, the patentee
 repeatedly recognized that extrinsic evidence of the prior
 art is relevant. See Appellant’s Br. 47 (“[The defendant]
 did not rely on any prior art that discloses negatively
 weighting premature ventricular beats or the use of non-
 linear statistics to identify [atrial fibrillation and atrial
 flutter]. Nor did [the defendant] rely on an expert declara-
 tion demonstrating that either technique, individually or
 in combination with the other elements of the asserted
 claims, was known.”). 3        Moreover, the parties both

 or dismisses evidence that proves the ’207 patent discloses
 inventive concepts that improved existing cardiac monitor-
 ing.”); Appellant’s Br. at 55 (“[N]othing in the patent says
 that the claims merely computerize a routine diagnostic
 method.”); id. at 56–57 (“[N]othing in the patent suggests
 that the claims merely computerize pre-existing tech-
 niques for diagnosing [atrial fibrillation and atrial flut-
 ter].”).
     3    See also Reply 26 (“InfoBionic has not and cannot
 identify any prior art device—conventional or otherwise—
 that used this combination of components and algo-
 rithms. Nor has InfoBionic identified any pre-existing ap-
 proach by doctors to diagnosing [atrial fibrillation and
 atrial flutter] that used this combination of components
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 6                           CARDIONET, LLC v. INFOBIONIC, INC

 discussed a prior art document in their briefing as evidence
 of longstanding practice of doctors. Appellee’s Br. 19 (citing
 to U.S. Patent Pub. 2002/0065473 as evidence that “medi-
 cal professionals have long been able to discern ventricular
 beats in an electrocardiogram” and that “[d]octors have
 long understood the need to identify and take ventricular
 beats into account.”); Reply 10 (arguing that the document
 “does not show or even suggest that doctors used that iden-
 tification to improve AF diagnosis”). There was, in short,
 agreement that the prior art was relevant.
      Third, any limitation on the use of extrinsic evidence
 would be inconsistent with binding authority. The Su-
 preme Court and our cases have consistently held that
 whether a practice is “longstanding” or “long prevalent” is
 central to the step one inquiry and have never suggested
 that prior art is irrelevant to that question. In Bilski v.
 Kappos, 561 U.S. 593 (2010), the Court held that “[t]he con-
 cept of hedging . . . is an unpatentable abstract idea” be-
 cause “‘[h]edging is a fundamental economic practice long
 prevalent in our system of commerce.’” Id. at 611 (empha-
 sis added) (quoting In re Bilski, 545 F.3d 943, 1013 (Fed.
 Cir. 2008) (Rader, J., dissenting)). In Alice Corp. Pty. v.
 CLS Bank Int’l, 573 U.S. 208 (2014), the Supreme Court
 explained that “the concept of intermediated settlement at
 issue” was “squarely within the realm of ‘abstract ideas,’”
id. at 221, because, “[l]ike the risk hedging in Bilski, the
 concept of intermediated settlement [in Alice] [wa]s ‘“a fun-
 damental economic practice long prevalent in our system
 of commerce,’”” id. at 219 (emphasis added) (quoting Bilski
 v. Kappos, 561 U.S. 593, 611 (2010)).           The Court

 and algorithms.”); id. at 10 (“Aside from the patent, the dis-
 trict court does not cite any prior art, physician, expert,
 treatise, article, or concession that supports its holding
 that the patent fails to improve cardiac monitoring technol-
 ogy.”).
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 emphasized that “hedging is a longstanding commercial
 practice,” id. at 220 (emphasis added) and “that the mere
 recitation of a generic computer cannot transform [this] pa-
 tent-ineligible abstract idea into a patent-eligible inven-
 tion,” id. at 223. As discussed below, numerous cases
 decided by our court held that claims were abstract because
 they claimed longstanding practices.
     In making the determination that practices are
 longstanding in the section 101 step one analysis, the Su-
 preme Court and our cases have also repeatedly recognized
 the relevance of extrinsic evidence, such as facts deter-
 mined by judicial notice and party admissions. In Bilski,
 the Supreme Court cited to economics textbooks when find-
 ing “the basic concept of hedging” to be a long prevalent
 practice, and therefore an abstract idea. Bilski, 561 U.S.
 at 611. In Alice, the Court cited to economics textbooks and
 articles in determining that “the concept of intermediated
 settlement” “is a fundamental economic practice long prev-
 alent in our system of commerce,” and therefore an ab-
 stract idea under step one. Alice, 573 U.S. at 221, 219–21
 (quoting Bilski, 561 U.S. at 611).
     Our cases have similarly not limited the analysis to the
 intrinsic record. For example, in Capital One Bank, in find-
 ing that claims directed to customizing marketing was in-
 eligible, we relied on the fact that “newspaper inserts had
 often been tailored based on information known about the
 customer—for example, a newspaper might advertise
 based on the customer’s location.” 792 F.3d at 1369 (em-
 phasis added). In Affinity Labs of Texas, LLC v. DIRECTV,
 LLC, 838 F.3d 1253 (Fed. Cir. 2016), we found claims for
 “providing out-of-region access to regional broadcast con-
 tent” to be an abstract idea by relying on the fact that “[t]he
 practice of conveying regional content to out-of-region re-
 cipients has been employed by nearly every form of media
 that has a local distribution.” Id. at 1258 (emphasis
 added). In Content Extraction & Transmission LLC v.
 Wells Fargo Bank, National Ass’n, 776 F.3d 1343 (Fed. Cir.
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 8                          CARDIONET, LLC v. INFOBIONIC, INC

 2014), we found claims to a method for recognizing images
 from hard copy documents to be abstract by considering
 that “banks have, for some time, reviewed checks, recog-
 nized relevant data such as the amount, account number,
 and identity of account holder, and stored that information
 in their records.” Id. at 1347 (emphasis added). In Berk-
 heimer v. HP Inc., 881 F.3d 1360 (Fed. Cir. 2018), we found
 that “the claims are directed to an abstract idea of parsing
 and comparing data” by considering patentee’s
 “admi[ssion] that [the claimed] parsers had existed for
 years prior to his patent.” Id. at 1366–67 (emphasis
 added). In In re Brown, 645 F. App’x 1014 (Fed. Cir. 2016),
 we found at step one that “the claims are drawn to the ab-
 stract idea of assigning hair designs to balance head shape”
 because the patent owner admitted “that the hair cutting
 step ‘employ[ed] a well-known concept’ [and] that the hair
 patterns applied are ‘industry recognized.’” Id. at 1016
 (emphasis added). 4 In each of these cases, the court did not

     4   In Intellectual Ventures I LLC v. Erie Indem. Co.,
 850 F.3d 1315 (Fed. Cir. 2017), we found claims to be di-
 rected to the abstract idea of “creating and using an index
 to search for and retrieve data.” Id. at 1328. In the step
 one analysis, the court found it persuasive that “[t]his type
 of activity, i.e., organizing and accessing records through
 the creation of an index-searchable database, includes
 longstanding conduct that existed well before the advent of
 computers and the Internet.” Id. at 1327 (emphasis
 added). In In re TLI Communications LLC Patent Litiga-
 tion, 823 F.3d 607 (Fed. Cir. 2016), we found that “attach-
 ing classification data, such as dates and times, to images
 for the purpose of storing those images in an organized
 manner is a well-established ‘basic concept’ sufficient to
 fall under Alice step 1.” Id. at 613 (emphasis added); see
 also Finjan, Inc. v. Blue Coat Systems, Inc., 879 F.3d 1299,
 1302, 1305–06 (Fed. Cir. 2018) (determining that “[b]y
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 CARDIONET, LLC v. INFOBIONIC, INC                            9

 limit itself to intrinsic evidence, in each case relying on ev-
 idence outside of the patent itself.
      Significantly, this approach has been recognized in the
 very cases on which the majority itself relies. Maj. Op. 21–
 22. In BASCOM Global Internet Services, Inc. v. AT&T
 Mobility LLC, 827 F.3d 1341 (Fed. Cir. 2016), we found
 that “filtering content [wa]s an abstract idea because it is
 a longstanding, well-known method of organizing human
 behavior,” though the claims provided an inventive concept
 at step two by “carv[ing] out a specific location for the fil-
 tering system (a remote ISP server) and require[d] the fil-
 tering system to give users the ability to customize filtering
 for their individual network accounts.” Id. at 1348, 1352.
 In FairWarning IP, LLC v. Iatric Sys., Inc., 839 F.3d 1089
 (Fed. Cir. 2016), we found ineligible claims “directed to col-
 lecting and analyzing information to detect misuse and no-
 tifying a user when misuse is detected.” Id. at 1094. We
 noted, in finding the claims directed to an abstract idea at
 step one, that the claims ask “the same questions . . . that
 humans in analogous situations detecting fraud have
 asked for decades, if not centuries” and thus “merely im-
 plement an old practice in a new environment.” Id. at
 1094–95. In making the step one determination, we thus
 have persistently looked outside the intrinsic evidence.

 itself, virus screening [wa]s well-known and constitutes an
 abstract idea,” as was “performing the virus scan on an in-
 termediary computer,” though ultimately finding claims el-
 igible because a “system and method for providing
 computer security by attaching a security profile to a down-
 loadable” “employ[ed] a new kind of file that enable[d] a
 computer security system to do things it could not do be-
 fore.” (first alteration in original) (emphasis added) (first
 quote from Intellectual Ventures I LLC v. Symantec Corp.,
 838 F.3d 1307, 1319 (Fed. Cir. 2016))).
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     The majority, while recognizing the relevance of
 longstanding practice in the step one analysis, attempts to
 distinguish the above cases by suggesting undefined limits
 on the use of prior art to determine the “state of the art at
 the time of the invention.” Maj. Op. 22. The majority opin-
 ion cites to no authority to support any such limits. Deter-
 mining whether something is a longstanding practice
 necessarily requires an analysis of whether the practice is
 part of a well-established “state of the art at the time of the
 invention.” Id. “Evidence of the state of the art . . . . con-
 sists of proof of what was old and in general use at the time
 of the alleged invention. It is received . . . to show what
 was then old, [and] to distinguish what was new . . . .”
 Brown v. Piper, 91 U.S. 37, 41 (1875).
     The panel does not purport to overrule prior cases, nor
 could it. But the language of the panel opinion is likely to
 sow confusion for both the district court and the bar.
     I respectfully dissent from Part II.C of the majority
 opinion, and concur in the result.