Prosecution Insights
Last updated: October 02, 2026
Application No. 19/047,879

METHOD FOR RETROSPECTIVELY CALIBRATING AN EXTERNAL MOTION SIGNAL ACQUIRED IN PARALLEL TO AN MRI EXAMINATION

Non-Final OA §101§102
Filed
Feb 07, 2025
Priority
Feb 14, 2024 — EU 24157550.5
Examiner
HARRISON, MICHAEL A
Art Unit
Tech Center
Assignee
King's College London
OA Round
1 (Non-Final)
89%
Grant Probability
Favorable
1-2
OA Rounds
1m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allowance Rate
521 granted / 586 resolved
+28.9% vs TC avg
Minimal +3% lift
Without
With
+2.7%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 9m
Avg Prosecution
19 currently pending
Career history
605
Total Applications
across all art units

Statute-Specific Performance

§101
2.4%
-37.6% vs TC avg
§103
42.6%
+2.6% vs TC avg
§102
36.6%
-3.4% vs TC avg
§112
11.6%
-28.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 586 resolved cases

Office Action

§101 §102
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Claim Objections Claims 1, 17, and 18 are objected to because of the following informalities: the recitation of “ab external motion” is unclear because it is unclear to what “ab” refers. If “ab” is an abbreviation, it is requested that the abbreviation is fully spelled out for clarity. Note that the specification does not appear to discuss “ab external rotation”. Appropriate correction is required. Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefore, subject to the conditions and requirements of this title. Claims 1-16 and 18 are rejected under 35 U.S.C. 101 because the claimed invention is directed to an abstract idea without significantly more. Step 1 The claims are directed at methods and apparatus and therefore are directed at one of the four statutory categories Step 2A prong 1 Prong 1 requires the Examiner to determine whether the claims recite an abstract idea that fall under one of the following four categories: a) mathematical concept, b) certain methods of organizing human activity, c) mental process, or d) other abstract ideas such as an idea of itself. The claim limitations in the abstract idea have been highlighted in bold below; the remaining limitations are "additional elements." Specifically representative Claim 1 recites: A method for retrospectively calibrating an external motion signal in parallel to a magnetic resonance imaging examination of a subject, wherein the magnetic resonance imaging examination comprises a plurality of magnetic resonance imaging scans (routine data gathering and math; does not add significantly more because this represents extrasolution activity), the method comprising: acquiring a plurality of motion calibration k-space data packets using a magnetic resonance imaging protocol in between the plurality of magnetic resonance imaging scans (routine data gathering and math); combining the plurality of motion calibration k-space data packets acquired across the magnetic resonance imaging examination and applying an optimization algorithm to the combined motion calibration k-space data packets to estimate motion states of the subject during acquisition of the plurality of motion calibration k-space data packets (routine data gathering and math; computer implementation of method); and estimating a calibration motion model from the motion states and ab external motion signal acquired simultaneously with the plurality of motion calibration k-space data packets, wherein the calibration motion model maps the external motion signal to a corresponding motion state (abstract; routine data gathering and math; computer implementation of method). Regarding Claim 18, the limitations of this claim are abstract and/or qualify as insignificant extra solution activity for the reasons given next to bolded portions of Claim 1, above. The non-statutory computer readable medium constitutes insignificant extra solution activity, in which the same abstract method steps are undertaken. Furthermore, dependent Claims 2-16 are also abstract and/or qualify as insignificant extra solution activity for the reasons given next to bolded portions of Claim 1, above. The highlighted portion of the claim constitutes an abstract idea because it is analogous to other ideas identified as abstract in court decisions. See MPEP 2106.04(B) which has distilled some concepts that the courts have deemed ineligible. Each limitation above, where noted, is analogous to subject matter deemed an abstract idea in previous court decisions as mental processes that can be performed in the human mind (MPEP 2104.04(B)(iii). The claims at issue can be summarized, where noted, as concepts that can be performed in the human mind, and examples of mental processes include observations, evaluations, judgments, and opinions (see CyberSource Corp. v. Retail Decisions, Inc., 654 F.3d 1366, 1372, 99 USPQ2d 1690, 1695 (Fed. Cir. 2011); Gottschalk v. Benson, 409 U.S. 63, 175 USPQ 673 (1972); Mayo Collaborative Servs. v. Prometheus Labs. Inc., 566 U.S. 66, 71, 101 USPQ2d 1961, 1965). Notably, in Synopsys, Inc. v. Mentor Graphics Corp., 839 F.3d 1138, 1147-49, 120 USPQ2d 1473, 1480-81 (Fed. Cir. 2016), the court disagreed, because it interpreted the claims as encompassing nothing other than pure mental steps (and thus falling within an abstract idea grouping) because the claims did not include any limitations requiring computer implementation. The court held that the claims were directed to a mental process of "translating a functional description of a logic circuit into a hardware component description of the logic circuit" are directed to an abstract idea, because the claims "read on an individual performing the claimed steps mentally or with pencil and paper"). Mental processes can be performed by humans with the assistance of physical aids such as pens or paper. See MPEP 2106.04(B) which has distilled some concepts that the courts have deemed ineligible. Each limitation above is analogous to subject matter deemed an abstract idea in previous court decisions as collecting, displaying, and manipulating data (MPEP 2104.04(B)(i) and collecting information, analyzing it, and displaying certain results of the collection and analysis (MPEP 2104.04(B)(ii). The claims at issue can be summarized, where noted as merely mathematical concepts and calculations, as collecting information, analyzing it, and displaying certain results of the collection and analysis (Electric Power Group v. Alstrom, 2015-1778). Both cases are highly relevant and also very recent. Information as such is an intangible. See Microsoft Corp. v. AT & TCorp., 550 U.S. 437,451 n.12 (2007); Bayer AG v. Housey Pharm., Inc., 340F.3d 1367, 1372 (Fed. Cir. 2003). See also the seminal case of Parker v. Flook, 437 U.S. 584, where the Supreme Court found that mere post-solution activity (such as the natural output of a mathematical algorithm) does not make the ineligible eligible. The CAFC has treated collecting information, including when limited to particular content (which does not change its character as information), as within the realm of abstract ideas. See, e.g., Internet Patents, 790 F.3d at 1349;... In a similar vein, the Court has treated analyzing information by steps people go through in their minds, or by mathematical algorithms, without more, as essentially mental processes within the abstract-idea category. See, e.g., TLI Commc'ns, 823 F.3dat 613;. . . And the Court has recognized that merely presenting the results of abstract processes of collecting and analyzing information, without more (such as identifying a particular tool for presentation), is abstract as an ancillary part of such collection and analysis. See, e.g., Content Extraction, 776F.3dat 1347. Step 2A prong 2 Under prong 2 Examiner is to determine whether the additional elements integrate the abstract idea into a practical application. In order to do this Examiner must identify whether there are additional elements and evaluate whether those additional elements individually and in combination integrate the abstract idea into a practical application. In this case, there are no additional elements aside from describing the gathered data. The only elements of Claims 1-16 and 18 are directed towards gathering and manipulation of data and/or mental processes and no result is discussed. Without a result there can be no practical application of the algorithm of Claims 1-16 and 18. Courts have determined that elements including sensors, processors and memory do not cause a Claim having an abstract idea to be directed at more than the abstract idea. For example. Courts have declined to find significantly more than an abstract idea in claims involving receiving or transmitting data over a network, e.g., using the Internet to gather data, Symantec, 838 F.3d at 1321,120 USPQ2d at 1362 (utilizing an intermediary computer to forward information); TLI Communications LLC v. AV Auto. LLC, 823 F.3d 607, 610,118 USPQ2d 1744, 1745 (Fed. Cir. 2016) (using a telephone for image transmission); OIP Techs., Inc., v. Amazon.com, Inc., 788 F.3d 1359,1363,115 USPQ2d 1090, 1093 (Fed. Cir. 2015) (sending messages over a network); buySAFE, Inc. v. Google, Inc., 765 F.3d 1350, 1355,112 USPQ2d 1093,1096 (Fed. Cir. 2014) (computer receives and sends information over a network); but see DDR Holdings, LLCv. Hotels.com, L.P., 773 F.3d 1245,1258, 113 USPQ2d 1097, 1106 (Fed. Cir. 2014) Also, Courts have declined to find significantly more than an abstract idea in claims involving performing repetitive calculations, Flook, 437 U.S. at 594,198 USPQ2d at 199 (recomputing or readjusting alarm limit values); Bancorp Services v. Sun Life, 687 F.3d 1266,1278, 103 USPQ2d 1425, 1433 (Fed. Cir. 2012) ("The computer required by some of Bancorp’s claims is employed only for its most basic function, the performance of repetitive calculations, and as such does not impose meaningful limits on the scope of those claims."). Furthermore, as stated above, the act of repair and maintenance is wholly unrelated to the abstract idea/algorithm. In Diehr, the abstract algorithm was tied into a practical application because the rubber that was manufactured had characteristics (the degree of cure) that was determined by the algorithm. In this case, the algorithm has no effect on the repair, aside from merely flagging the need for repair, much more analogous to the alarm limit in Flook. Step 2B In step 2B Examiner must determine whether the additional elements are well-understood, routine, and conventional. Examiner must do this consistent with the Berkheimer Memo. The Berkheimer Memo describes "an additional element (or combination of elements) is not well-understood, routine or conventional unless the examiner finds, and expressly supports a rejection in writing with, one or more of the following: 1. A citation to an express statement in the specification or to a statement made by an applicant during prosecution that demonstrates the well-understood, routine, conventional nature of the additional element(s). 2. A citation to one or more of the court decisions discussed in the MPEP’s noting the well-understood, routine, conventional nature of the additional element(s). 3. A citation to a publication that demonstrates the well-understood, routine, conventional nature of the additional element(s). 4. A statement that the examiner is taking official notice of the well-understood, routine, conventional nature of the additional element(s). See Berkheimer Memo at 3-4. As mentioned above, there are no additional elements in Claims 1-16 and 18 aside from the recitation of the algorithm, performative mental processes, and the data gathered and manipulated. As such, there are no additional elements to be considered individually and in combination with the other claim elements, and therefore cannot make the claim as a whole significantly more than the abstract idea itself. Rather than being a particular limited application of the abstract idea which serves to improve a specific method or device, the claim would tend to monopolize the abstract idea itself in practice. Stated simply, nothing in claims 1 and 18 form a nexus between the algorithm and a calibration system or process. Claims 2-16 do not include any limitations to cause the claims to be directed at more than the abstract idea. Independent Claim 17 contains sufficient elements to create a nexus between the abstract idea and a practical use. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1, 5, 9-11, 13, and 16-18 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Bydder et al. USPG Pub. No.: US 2019/0086501. Regarding Claim 17, Bydder teaches a magnetic resonance imaging apparatus (see figure 6 which teaches an MRI apparatus) comprising: a radio frequency controller (figure 6, 12) configured to drive an RF-coil comprising a multi-channel coil array (see figures 1 and 6); a gradient controller (figure 6, 11) configured to control gradient coils; and a control unit configured to control the radio frequency controller and the gradient controller to: acquire a plurality of motion calibration k-space data packets using a magnetic resonance imaging protocol in between a plurality of magnetic resonance imaging scans (see figure 1, in which k-space packets are acquired from a plurality of scans; see claim 1); combine the plurality of motion calibration k-space data packets acquired across the magnetic resonance imaging examination and applying an optimization algorithm to the combined motion calibration k-space data packets to estimate motion states of a subject during acquisition of the plurality of motion calibration k-space data packets (see figure 1, [0045]-[0046], [0076] teaching an optimization algorithm, [0084], and see Claim 1); and estimate a calibration motion model from the motion states and ab external motion signal acquired simultaneously with the plurality of motion calibration k-space data packets, wherein the calibration motion model maps the external motion signal to a corresponding motion state (see figure 1, [0045]-[0046], and Claim 1). Regarding Claim 1, the device as recited in claim 17 is specific to this method and thus it must perform the method. The method is intrinsic to the apparatus because the recited method steps will be performed during normal operation of the apparatus. Therefore, Claim 1 is also rejected. Regarding Claim 18, the device as recited in claim 17 is specific to the instruction of the non-statutory computer readable medium and thus it must perform the instructions. The instructions are intrinsic to the apparatus because the recited method steps will be performed during normal operation of the apparatus. Furthermore, Claim 18 is rejected as Bydder teaches a non-transitory computer implemented storage medium, including machine- readable instructions stored therein for retrospectively calibrating an external motion signal in parallel to a magnetic resonance imaging examination of a subject, wherein the magnetic resonance imaging examination comprises a plurality of magnetic resonance imaging scans (see Claim 19). Therefore, Claim 18 is also rejected. Regarding Claim 5, Bydder teaches the method of claim 1, further comprising: using the calibration motion model and the acquired external motion signal for retrospective motion correction of the data acquired in the magnetic resonance imaging scans (see figures 1-2 and 6). Regarding Claim 9, Bydder teaches the method of claim 1, wherein the external motion signal is a pilot tone signal acquired with a magnetic resonance receiver coil array (see figures 1-2 and 6). Regarding Claim 10, Bydder teaches he method of claim 9, wherein the pilot tone signal is a multi-channel pilot tone signal (see figures 1-2 and 6). Regarding Claim 11, Bydder teaches the method of claim 1, wherein the plurality of motion calibration k-space data packets are acquired using a low-resolution three-dimensional imaging protocol, and wherein the acquisition of one three-dimensional image is distributed over several data packets (seen in figures 1-2). Regarding Claim 13, Bydder teaches the method of claim 1, wherein the plurality of motion calibration k-space data packets are acquired using a distributed sampling order, in which samples acquired during one temporal segment are distributed across k-space, wherein successively acquired k-space samples are not adjacent to each other in k-space (see [0021] and Claim 1). Regarding Claim 16, Bydder teaches the method of claim 1, wherein the calibration motion model is a linear model and comprises a calibration matrix that maps an external motion signal on a motion state of the subject (seen in figure 1 and [0005]). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL A HARRISON whose telephone number is (571)272-3573. The examiner can normally be reached Monday-Friday 9:00 AM - 5:00 PM. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, STEPHANIE BLOSS can be reached at (571) 272-3555. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /MICHAEL A HARRISON/Examiner, Art Unit 2852
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Prosecution Timeline

Feb 07, 2025
Application Filed
Sep 10, 2026
Non-Final Rejection mailed — §101, §102 (current)

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Prosecution Projections

1-2
Expected OA Rounds
89%
Grant Probability
92%
With Interview (+2.7%)
1y 9m (~1m remaining)
Median Time to Grant
Low
PTA Risk
Based on 586 resolved cases by this examiner. Grant probability derived from career allowance rate.

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