Prosecution Insights
Last updated: April 19, 2026
Application No. 18/369,746

MACHINE LEARNING-BASED HYPERSPECTRAL DETECTION AND VISUALIZATION METHOD OF NITROGEN CONTENT IN SOIL PROFILE

Non-Final OA §101
Filed
Sep 18, 2023
Examiner
LEE, BYUNG RO
Art Unit
2858
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Institute of Soil Science, Chinese Academy of Sciences
OA Round
1 (Non-Final)
76%
Grant Probability
Favorable
1-2
OA Rounds
2y 8m
To Grant
95%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allow Rate
82 granted / 108 resolved
+7.9% vs TC avg
Strong +19% interview lift
Without
With
+18.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
35 currently pending
Career history
143
Total Applications
across all art units

Statute-Specific Performance

§101
28.3%
-11.7% vs TC avg
§103
37.2%
-2.8% vs TC avg
§102
15.2%
-24.8% vs TC avg
§112
17.4%
-22.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 108 resolved cases

Office Action

§101
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 . Specification Applicant is reminded of the proper language and format for an abstract of the disclosure. The abstract should be in narrative form and generally limited to a single paragraph on a separate sheet within the range of 50 to 150 words in length. The abstract should describe the disclosure sufficiently to assist readers in deciding whether there is a need for consulting the full patent text for details. The language should be clear and concise and should not repeat information given in the title. It should avoid using phrases which can be implied, such as, “The disclosure concerns,” “The disclosure defined by this invention,” “The disclosure describes,” etc. In addition, the form and legal phraseology often used in patent claims, such as “means” and “said,” should be avoided. The abstract of the disclosure is objected to because it is not in narrative form and uses the implied phrase, “the present disclosure”. (Emphasis added). See MPEP § 608.01(b). 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 therefor, subject to the conditions and requirements of this title. The current 35 USC 101 analysis is based on the current guidance (Federal Register vol. 79, No. 241. pp. 74618-74633). The analysis follows several steps. Step 1 determines whether the claim belongs to a valid statutory class. Step 2A prong 1 identifies whether an abstract idea is claimed. Step 2A prong 2 determines whether any abstract idea is integrated into a practical application. If the abstract idea is integrated into a practical application the claim is patent eligible under 35 USC 101. Last, step 2B determines whether the claims contain something significantly more than the abstract idea. In most cases the existence of a practical application predicates the existence of an additional element that is significantly more. The 35 USC 101 analysis between each element of claims and its combination is presented in the table below Claim number and elements Judicial exception (Step 2A Prong one) Practical application (Step 2A Prong two)/ Significantly more (Step 2B) Claim 1 Step 1: Yes, statutory class Step 2A Prong two: No / Step 2B: No A machine learning-based hyperspectral detection and visualization method of a nitrogen content in a soil profile, comprising at least the following steps: Step2A Prong one: Yes sampling soil in a detection area based on a predetermined depth to obtain a plurality of soil profile samples about the detection area; obtaining an initial hyperspectral image of each soil profile sample, and performing image preprocessing on the initial hyperspectral image to obtain an effective hyperspectral image; “sampling soil in a detection area ~ to obtain a plurality of soil profile samples ~” is insignificant extra-solution activities to collect data. “obtaining an initial hyperspectral image of each soil profile sample, and performing image preprocessing ~” is insignificant extra-solution activity to perform a generic computer function of data/image processing. (para 0047-0051). selecting n regions of interest that are continuously distributed and have the same shape and size on the effective hyperspectral image, and calculating n pieces of average spectral data based on all pixels of each region of interest, wherein n is an integer; abstract idea mathematical concept “selecting n regions of interest … calculating n pieces of average spectral data” is a math process and/or data processing. (para 44, 48-0053) detecting contents of at least five forms of nitrogen in the soil profile samples in each region of interest to obtain a standard content of each form of soil nitrogen; and abstract idea mathematical concept “detecting contents of at least five forms of nitrogen in the soil profile samples in each region of interest to obtain a standard content …” is a math process. (para 0044, 0053-0057, 0065). establishing a plurality of hyperspectral prediction models by using at least one learning algorithm; selecting an optimal prediction model corresponding to a soil nitrogen form from the plurality of hyperspectral prediction models based on evaluation indexes, predicting a soil nitrogen content corresponding to each pixel of the hyperspectral image of the soil profile in the corresponding form based on the optimal prediction model, denoting the soil nitrogen content as a predicted soil nitrogen content, and outputting the predicted soil nitrogen content to obtain a visualized image. abstract idea mathematical concept “establishing ~” is a math process. (para 0057-0076). “selecting an optimal prediction model …, predicting a soil nitrogen content … denoting the soil nitrogen content …” is a math process. (para 0061-76). “outputting …” is insignificant extra-solution activity to perform a generic computer function of data processing. Claims 1-12 are rejected under 35 U.S.C. 101 because the claimed invention is directed to a judicial exception (i.e., a law of nature, a natural phenomenon, or an abstract idea) without significantly more. Claims 1-12 are directed to an abstract idea. The claim(s) does/do not include additional elements that are sufficient to amount to significantly more than the judicial exception as addressed below and presented in the above table. Step 2A: Prong One Regarding Claim 1, the limitations recited in Claim 1, as drafted, are processes that, under its broadest reasonable interpretation, cover performance of the limitation in the mathematical calculations and/or the mind, as presented in the above table. Nothing in the claim elements precludes the step from practically being performed in the mind and/or the mathematical calculations. For example, “selecting n regions of interest that are continuously distributed and have the same shape and size on the effective hyperspectral image, and calculating n pieces of average spectral data based on all pixels of each region of interest, wherein n is an integer” in the context of this claim may encompass manually calculating or inferring the n pieces of average spectral data based on the selected regions of interest in the obtained hyperspectral image which is indicative of collected data used for perform abstract idea of mathematical calculations (see at least paragraphs 0044 and 0048-0053). (MPEP 2106.04(a)(2)). For example, “detecting contents of at least five forms of nitrogen in the soil profile samples in each region of interest to obtain a standard content of each form of soil nitrogen” in the context of this claim may encompass manually calculating or inferring the standard content of each form of soil nitrogen based on the detected contents in the soil profile samples (see at least paragraphs 0044, 0053- 0057 and 0065). (MPEP 2106.04(a)(2)). For example, “establishing a plurality of hyperspectral prediction models by using at least one learning algorithm” in the context of this claim may be indicative of image/data processing itself which may encompass manually calculating or inferring the prediction models using a mathematical algorithm (i.e., learning algorithm) (see at least paragraphs 0057-0076). (MPEP 2106.04(a)(2)). For example, “selecting an optimal prediction model corresponding to a soil nitrogen form from the plurality of hyperspectral prediction models based on evaluation indexes, predicting a soil nitrogen content corresponding to each pixel of the hyperspectral image of the soil profile in the corresponding form based on the optimal prediction model, denoting the soil nitrogen content as a predicted soil nitrogen content” in the context of this claim may be indicative of image/data processing itself which may encompass manually calculating or inferring the optimal prediction model, the soil nitrogen content in the hyperspectral image of the soil profile using a mathematical algorithm (i.e., learning algorithm) (see at least paragraphs 0061-0076). (MPEP 2106.04(a)(2)). Step 2A: Prong Two This judicial exception is abstract ideal itself and not integrated into a practical application. In particular, the specification details use of a computer processor to perform mathematical calculations or mental processes of “selecting n regions of interest that are continuously distributed and have the same shape and size on the effective hyperspectral image, and calculating n pieces of average spectral data based on all pixels of each region of interest, wherein n is an integer”, “detecting contents of at least five forms of nitrogen in the soil profile samples in each region of interest to obtain a standard content of each form of soil nitrogen”, “establishing a plurality of hyperspectral prediction models by using at least one learning algorithm” and “selecting an optimal prediction model corresponding to a soil nitrogen form from the plurality of hyperspectral prediction models based on evaluation indexes, predicting a soil nitrogen content corresponding to each pixel of the hyperspectral image of the soil profile in the corresponding form based on the optimal prediction model, denoting the soil nitrogen content as a predicted soil nitrogen content”. The limitations of “sampling soil in a detection area based on a predetermined depth to obtain a plurality of soil profile samples about the detection area” and “obtaining an initial hyperspectral image of each soil profile sample, and performing image preprocessing on the initial hyperspectral image to obtain an effective hyperspectral image” are insignificant extra-solution activities necessary to merely gather data (i.e., soil profile samples and hyperspectral image) by performing generic computer functions of a generic computer component such as, for example, a visible-near infrared spectroscopy (see Background in the instant application). See MPEP 2106.05(g). The limitation of “outputting the predicted soil nitrogen content to obtain a visualized image” is insignificant post-solution activity necessary to merely display the visualized image of the predicted soil nitrogen content which is obtained from the mathematical calculations related to data/image processing. See MPEP 2106.05(g). Claim 1 does not present tangible or physical elements/components and/or integration of improvements to be indicative of specific features/structure/acts how and or with what to detect a nitrogen content in a soil profile and perform visualization of the predicted soil nitrogen content. (See MPEP 2106.04(d)). Claim 1 does not present a technical solution to a technical problem by providing an improvement to the functioning of computer, or to any other technology or technical field related to detecting a nitrogen content in a soil profile and performing visualization of the predicted soil nitrogen content. (See MPEP 2106.04(d)). Therefore, there is no showing of integration into a practical application such as an improvement to the functioning of a computer, or to any other technology or technical field, or use of a particular machine. Step 2B: The claim does not include additional elements that are sufficient to amount to significantly more than the judicial exception. The limitations of “sampling soil in a detection area based on a predetermined depth to obtain a plurality of soil profile samples about the detection area” and “obtaining an initial hyperspectral image of each soil profile sample, and performing image preprocessing on the initial hyperspectral image to obtain an effective hyperspectral image” are insignificant pre-solution activities necessary to merely gather data (i.e., soil profile samples and hyperspectral image) by performing generic computer functions of a generic computer component such as, for example, a visible-near infrared spectroscopy (see Background in the instant application). The limitation of “outputting the predicted soil nitrogen content to obtain a visualized image” is insignificant post-solution activity necessary to merely display the visualized image of the predicted soil nitrogen content which is obtained from the mathematical calculations related to data/image processing. See MPEP 2106.05(d). As discussed above, with respect to integration of the abstract idea into a practical application, using a computer system to perform “sampling soil in a detection area based on a predetermined depth to obtain a plurality of soil profile samples about the detection area”, “obtaining an initial hyperspectral image of each soil profile sample, and performing image preprocessing on the initial hyperspectral image to obtain an effective hyperspectral image”, “selecting n regions of interest that are continuously distributed and have the same shape and size on the effective hyperspectral image, and calculating n pieces of average spectral data based on all pixels of each region of interest, wherein n is an integer”, “detecting contents of at least five forms of nitrogen in the soil profile samples in each region of interest to obtain a standard content of each form of soil nitrogen”, “establishing a plurality of hyperspectral prediction models by using at least one learning algorithm” and “selecting an optimal prediction model corresponding to a soil nitrogen form from the plurality of hyperspectral prediction models based on evaluation indexes, predicting a soil nitrogen content corresponding to each pixel of the hyperspectral image of the soil profile in the corresponding form based on the optimal prediction model, denoting the soil nitrogen content as a predicted soil nitrogen content” and “outputting the predicted soil nitrogen content to obtain a visualized image” amounts to no more than mere instructions to apply the exception using a generic computer component. Mere instructions to apply an exception using a generic computer component cannot provide an inventive concept cannot provide statutory eligibility. Claim 1 is not patent eligible. Regarding Claims 2-12, the limitations are further directed to an abstract idea, as described in claim 1. The limitations of “detecting outliers of all the average spectral data … randomly dividing filtered average spectral data … assigning a value range and a search step size to parameters … performing parameter optimization … establishing a regression relationship ...” in Claim 2, and “evaluating evaluation values …” in Claim 4 may encompass manually calculating or inferring the regression relationship between hyperspectral signals and different soil nitrogen contents, evaluation values using a mathematical model (see at least paragraphs 0053-0076). (MPEP 2106.04(a)(2)). The limitation of “at least a partial least square regression (PLSR) algorithm, an artificial neuron network (ANN) algorithm, and a support vector machine regression (SVMR) algorithm; and correspondingly, the plurality of hyperspectral prediction models are a PLSR prediction model, an ANN prediction model, and an SVMR prediction model” in Claim 3 may be indicative of mathematical algorithm itself to be performed by a generic computer function of a generic computer component. The limitation of “obtaining a soil hyperspectral image based on a soil profile sample, obtaining each pixel on the soil hyperspectral image and a corresponding spectral reflectance curve, inputting the spectral reflectance curve into the optimal prediction model, and obtaining a predicted gray-scale image by means of the optimal prediction model, …; and performing pseudo-color processing on the predicted gray-scale image to obtain a visualized image about contents of total nitrogen, …” in Claim 5, “performing gray-scale and geometric correction …” in Claim 8 may encompass manually calculating or inferring the visualized image about the contents performed by mathematical processes related to data/image processing (see at least paragraphs 0053-0076). (MPEP 2106.04(a)(2)). The limitation of “one or more of an apparent absorption rate, a first derivative, a second derivative, Savitzky-Golay smoothing, a Gap-Segment derivative, detrending, or standard normal variable transformation” in Claim 9 is indicative of mathematical values/amounts/factors used for mathematical calculation as set forth above. For the reasons described above with respect to Claims 1-12, the judicial exceptions are not meaningfully integrated into a practical application, or amount to significantly more than the abstract idea. Citation of Pertinent Art The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Jia et al. (US 20210365738 A1) teaches a method and apparatus for training a model, predicting a mineral, and relates to the fields of computer vision and deep learning technologies, where the method may include: acquiring a target hyperspectral image of a target area, the target hyperspectral image including at least one pixel point annotated with a mineral category; determining a mask image corresponding to the target hyperspectral image; determining a sample hyperspectral image according to the target hyperspectral image and the mask image; determining an annotation vector of each pixel point according to the at least one pixel point annotated with the mineral category; and training a model according to the sample hyperspectral image and the annotation vector of the each pixel point. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to BYUNG RO LEE whose telephone number is (571)272-3707. The examiner can normally be reached on Monday-Friday 8:30am-4:00pm. 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, Lee Rodak can be reached on (571) 270-5628. The fax phone number for the organization where this application or proceeding is assigned is 571-273-2555. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see https://ppair-my.uspto.gov/pair/PrivatePair. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /BYUNG RO LEE/Examiner, Art Unit 2858 /LEE E RODAK/Supervisory Patent Examiner, Art Unit 2858
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Prosecution Timeline

Sep 18, 2023
Application Filed
Jan 07, 2026
Non-Final Rejection — §101 (current)

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Prosecution Projections

1-2
Expected OA Rounds
76%
Grant Probability
95%
With Interview (+18.9%)
2y 8m
Median Time to Grant
Low
PTA Risk
Based on 108 resolved cases by this examiner. Grant probability derived from career allow rate.

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