Prosecution Insights
Last updated: October 26, 2026
Application No. 17/109,824

FACTORIZED NEURAL NETWORK

Final Rejection §101
Filed
Dec 02, 2020
Priority
Oct 02, 2020 — provisional 63/087,018
Examiner
MENGISTU, TEWODROS E
Art Unit
2127
Tech Center
2100 — Computer Architecture & Software
Assignee
Microsoft Technology Licensing, LLC
OA Round
6 (Final)
50%
Grant Probability
Moderate
7-8
OA Rounds
0m
Est. Remaining
81%
With Interview

Examiner Intelligence

Grants 50% of resolved cases
50%
Career Allowance Rate
74 granted / 148 resolved
-5.0% vs TC avg
Strong +31% interview lift
Without
With
+31.1%
Interview Lift
resolved cases with interview
Typical timeline
4y 5m
Avg Prosecution
23 currently pending
Career history
177
Total Applications
across all art units

Statute-Specific Performance

§101
28.2%
-11.8% vs TC avg
§103
45.5%
+5.5% vs TC avg
§102
9.5%
-30.5% vs TC avg
§112
14.3%
-25.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 148 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 . Claims 1, 4-7, 14, 16-17, and 21-29. Claims 1, 14, and 21 are independent. Response to Amendment The office action is responsive to the amendments filed on 07/20/2026. As directed by the amendments claims 1, 14, 21, and 26 are amended. Response to Arguments Applicant's arguments filed 07/20/2026 have been fully considered but they are not persuasive. Applicant arguments regarding 35 U.S.C. § 101: Examiner response: Examiner respectfully disagrees, MPEP §2106.05(a) reads: During examination, the examiner should analyze the "improvements" consideration by evaluating the specification and the claims to ensure that a technical explanation of the asserted improvement is present in the specification, and that the claim reflects the asserted improvement. However, the MPEP (§2106.05(a)(II)) also warns, “it is important to keep in mind that an improvement in the abstract idea itself (e.g. a recited fundamental economic concept) is not an improvement in technology.” Here, the alleged improvement in the form of factorizing a machine learning model which is an improvement to the abstract idea of factorization (i.e. mathematical concepts). Reciting that the factorized machine learning model has a lower parameter count than the initial machine learning model, is understood to be a field of use limitation - See MPEP 2106.05(h). The lower parameter count is a result of performing the mathematical concept of factorizing matrix. Factoring leads to lower parameters by breaking down a large weight matrix into smaller, lower-rank matrices. Performing the mathematical operations as a result leads to few parameters counts and as applicant states “reduced memory usage compared to the initial machine learning”. These claimed improvements are tied to performing the factorization which is a mathematical operation and describes an improvement to an abstract idea. MPEP 2106.05(a) says an improvement in the abstract idea itself is not an improvement in technology. 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. Claims 1, 4-7, 14, 16-17, and 21-29 rejected under 35 U.S.C. 101 because the claimed invention is directed to an abstract idea without significantly more. Step 1 According to the first part of the analysis, in the instant case, each of the claims falls within one of the four statutory categories (i.e., process, machine, manufacture, or composition of matter). Regarding Claim 1: 2A Prong 1: processing a layer of an initial machine learning model by factoring a matrix associated with the laver of the initial machine learning model into a set of factorization matrices to generate a factorized machine learning model having a factorized laver parameterized by the factorization matrices, and by initializing the factorization matrices using spectral initialization, wherein the initial machine learning model has an associated initial optimizer adapted to train the initial machine learning model by evaluating a non-factorized layer thereof; (This step for generating a factorized machine learning model is understood to be a recitation of a mathematical concept (i.e., mathematical calculations). Para 0017-0021 of the specification further describes the limitation, which is a mathematical operation/calculation.) generating, based at least in part on the initial optimizer of the initial machine learning model and on the factorized machine learning model, a processed optimizer by replacing a weight decay function of a regularizer of the initial optimizer with a Frobenius decay function, the processed optimizer being for training the factorized machine learning model and therein being adapted to evaluate the factorized layer; (This step for generating an optimizer and evaluating a factorized layer is understood to be a recitation of a mathematical concept (i.e., mathematical calculations). Para 0021-0027 of the specification further describes the limitation as performing a mathematical calculation.) 2A Prong 2: This judicial exception is not integrated into a practical application. Additional elements: A system comprising: at least one processor; and memory storing instructions that, when executed by the at least one processor, causes the system to perform a set of operations, the set of operations comprising: (The system having a processor and memory storing instructions to perform operations, are understood to be generic computer equipment or merely using a computer as a tool to perform an abstract idea - See MPEP 2106.05(f).) training the factorized machine learning model using the processed optimizer instead of the initial optimizer, wherein the trained factorized machine learning model is operable to generate inferences for a client application. (Training a machine learning model is understood as adding the words “apply it” (or an equivalent) with the judicial exception, or mere instructions to implement an abstract idea (e.g., generate inferences) on a computer - see MPEP 2106.05(f).)) outputting the factorized machine learning model, wherein the factorized machine learning model has a lower parameter count than the initial machine learning model. (This step is directed to transmitting information, which is understood to be insignificant extra-solution activity and data gathering. See MPEP 2106.05(g).) The additional elements as disclosed above alone or in combination do not integrate the judicial exception into practical application as they are insignificant extra solution activity in combination of generic computer functions that are implemented to perform the disclosed abstract idea above. 2B: The claim does not include additional elements that are sufficient to amount to significantly more than the judicial exception. Additional elements: A system comprising: at least one processor; and memory storing instructions that, when executed by the at least one processor, causes the system to perform a set of operations, the set of operations comprising: (The system having a processor and memory storing instructions to perform operations, are understood to be generic computer equipment or merely using a computer as a tool to perform an abstract idea - See MPEP 2106.05(f).) training the factorized machine learning model using the processed optimizer instead of the initial optimizer, wherein the trained factorized machine learning model is operable to generate inferences for a client application. (Training a machine learning model is understood as adding the words “apply it” (or an equivalent) with the judicial exception, or mere instructions to implement an abstract idea (e.g., generate inferences) on a computer - see MPEP 2106.05(f).)) outputting the factorized machine learning model, wherein the factorized machine learning model has a lower parameter count than the initial machine learning model. (This step is directed to transmitting or receiving information, which is understood to be insignificant extra-solution activity and is well understood, routine and conventional activity of transmitting and receiving data as identified by the court (MPEP2106.05(d)(ll)(i)))) The additional elements as disclosed above in combination of the abstract idea are not sufficient to amount to significantly more than the judicial exception as they are well, understood, routine and conventional activity as disclosed in combination of generic computer functions that are implemented to perform the disclosed abstract idea above. Regarding Claim 14: 2A Prong 1: A method of processing a machine learning model, the method comprising: factoring the initial matrix of the untrained machine learning model layer into a set of factorization matrices to generate a factorized machine learning model having a factorized laver parameterized by the factorization matrices; (This step for factoring a matrix is understood to be a recitation of a mathematical concept (i.e., mathematical calculations).) initializing the factorization matrices using spectral initialization, whereby the factorized machine learning model comprises in place of the initialization matrix the set of initialized factorization matrices; (This step for initializing is understood to be a recitation of a mathematical concept (i.e., mathematical calculations). Para 0021 of the specification further describes the formula used to perform spectral initialization, which is a mathematical calculation.) processing the initial optimizer to replace a weight decay function of a regularizer of the initial optimizer with a Frobenius decay function associated with the factorized layer, thereby generating as a replacement for the initial optimizer a processed optimizer for training the factorized machine learning model; (This step is understood to be a recitation of a mathematical concept (i.e., mathematical calculations). Para 0021-0026 of the specification further describe this limitation.) 2A Prong 2: This judicial exception is not integrated into a practical application. Additional elements: receiving, from a client device, an indication of an untrained machine learning model and an initial optimizer associated with the untrained machine learning model, wherein the untrained machine learning model comprises a layer that is parameterized by an initial matrix; (This step is directed to transmitting or receiving information, which is understood to be insignificant extra-solution activity and data gathering. See MPEP 2106.05(g).) providing, to the client device, the factorized machine learning model and the processed optimizer, wherein the factorized machine learning model has a lower parameter count than the untrained machine learning model. (This step is directed to transmitting or receiving information, which is understood to be insignificant extra-solution activity and data gathering. See MPEP 2106.05(g).) The additional elements as disclosed above alone or in combination do not integrate the judicial exception into practical application as they are insignificant extra solution activity that are implemented to perform the disclosed abstract idea above. 2B: The claim does not include additional elements that are sufficient to amount to significantly more than the judicial exception. Additional elements: receiving, from a client device, an indication of an untrained machine learning model and an initial optimizer associated with the untrained machine learning model, wherein the untrained machine learning model comprises a layer that is parameterized by an initial matrix; (This step is directed to transmitting or receiving information, which is understood to be insignificant extra-solution activity and is well understood, routine and conventional activity of transmitting and receiving data as identified by the court (MPEP2106.05(d)(ll)(i)))) providing, to the client device, the factorized machine learning model and the processed optimizer, wherein the factorized machine learning model has a lower parameter count than the untrained machine learning model. (This step is directed to transmitting or receiving information, which is understood to be insignificant extra-solution activity and is well understood, routine and conventional activity of transmitting and receiving data as identified by the court (MPEP2106.05(d)(ll)(i)))) The additional elements as disclosed above in combination of the abstract idea are not sufficient to amount to significantly more than the judicial exception as they are well, understood, routine and conventional activity as disclosed that are implemented to perform the disclosed abstract idea above. Regarding Claim 21: 2A Prong 1: at least one of the plurality of layers is a factorized neural network layer that is decomposed into a plurality of factorization matrices that have been initialized using spectral initialization and have been trained using gradient descent optimization with Frobenius decay based regularization; (This step for factoring a neural network is understood to be a recitation of a mathematical concept (i.e., mathematical calculations).) 2A Prong 2: This judicial exception is not integrated into a practical application. Additional elements: A computing system comprising: at least one processor and memory storing instructions that when executed by the processor, causes the processor to implement: (The system having a processor and memory storing instructions to perform operations, are understood to be generic computer equipment or merely using a computer as a tool to perform an abstract idea - See MPEP 2106.05(f).) a machine learning model including a neural network, the neural network including a plurality of layers (The specification of data to be stored is understood to be a field of use limitation - See MPEP 2106.05(h). This limitation further specifies the machine learning model.), wherein the factorized neural network layer is a fully connected layer, a convolutional layer, or a multiheaded attention layer (The specification of data to be stored is understood to be a field of use limitation - See MPEP 2106.05(h). This limitation further specifies the layer.); the factorized neural network laver has a lower parameter count than an initial unfactorized model laver from which the factorized neural network laver has been computed layer (The specification of data to be stored is understood to be a field of use limitation - See MPEP 2106.05(h). This limitation further specifies the factorized neural network layer.); and during training or inference, the machine learning model is configured to receive an input, process the input using the plurality of layers including the factorized neural network layer, and generate an output result. (This step is directed to transmitting or receiving information, which is understood to be insignificant extra-solution activity and data gathering. See MPEP 2106.05(g).) The additional elements as disclosed above alone or in combination do not integrate the judicial exception into practical application as they are insignificant extra solution activity in combination of generic computer functions and field of use that are implemented to perform the disclosed abstract idea above. 2B: The claim does not include additional elements that are sufficient to amount to significantly more than the judicial exception. Additional elements: A computing system comprising: at least one processor and memory storing instructions that when executed by the processor, causes the processor to implement: (The system having a processor and memory storing instructions to perform operations, are understood to be generic computer equipment or merely using a computer as a tool to perform an abstract idea - See MPEP 2106.05(f).) a machine learning model including a neural network, the neural network including a plurality of layers (The specification of data to be stored is understood to be a field of use limitation - See MPEP 2106.05(h). This limitation further specifies the machine learning model.), wherein the factorized neural network layer is a fully connected layer, a convolutional layer, or a multiheaded attention layer (The specification of data to be stored is understood to be a field of use limitation - See MPEP 2106.05(h). This limitation further specifies the layer.); the factorized neural network laver has a lower parameter count than an initial unfactorized model laver from which the factorized neural network laver has been computed layer (The specification of data to be stored is understood to be a field of use limitation - See MPEP 2106.05(h). This limitation further specifies the factorized neural network layer.) and during training or inference, the machine learning model is configured to receive an input, process the input using the plurality of layers including the factorized neural network layer, and generate an output result. (This step is directed to transmitting or receiving information, which is understood to be insignificant extra-solution activity and is well understood, routine and conventional activity of transmitting and receiving data as identified by the court (MPEP2106.05(d)(ll)(i)))) The additional elements as disclosed above in combination of the abstract idea are not sufficient to amount to significantly more than the judicial exception as they are well, understood, routine and conventional activity as disclosed in combination of generic computer functions and field of use that are implemented to perform the disclosed abstract idea above. Regarding Claims 4 and 16 2A Prong 1: wherein the processed optimizer further comprises a weight decay function associated with a non-factorized layer of the factorized machine learning model. (This step is understood to be a recitation of a mathematical concept (i.e., mathematical formulas or equations).) 2A Prong 2 & 2B: The claim does not recite any additional elements. Regarding Claims 5 and 17 2A Prong 1: The claim does not recite any Abstract idea. 2A Prong 2 & 2B: wherein the layer of the initial machine learning model is one of: a convolutional layer; a fully connected layer; or a multi-head attention layer. (The specification of data to be stored is understood to be a field of use limitation - See MPEP 2106.05(h). This limitation further specifies a layer.) Regarding Claim 6 2A Prong 1: wherein the initial machine learning model is processed to generate the factorized machine learning model based at least in part on a set of model processing rules. (This step for generating a factorized machine learning model based on a processing rule is understood to be a recitation of a recitation of a mental process (i.e., evaluation).) 2A Prong 2 & 2B: The claim does not recite any additional elements. Regarding Claim 7 2A Prong 1: the set of factorization matrices are based at least in part on the matrix- parameterized layer. (This step is understood to be a recitation of a mathematical concept (i.e., mathematical relationships).) 2A Prong 2 & 2B: wherein: the layer of the initial machine learning model is a matrix-parameterized layer; (The specification of data to be stored is understood to be a field of use limitation - See MPEP 2106.05(h). This limitation further specifies the layer of the machine learning model.) Regarding Claim 22 2A Prong 1: wherein the spectral initialization is performed using an optimizer that applies an update rule to the factorization matrices during stochastic gradient descent, and according to the update rule, the factorization matrices are updated such that a weight direction of the factorized layer is approximately updated with a step-size that is multiplied by a linear transformation of a gradient of the weight direction. (These steps are understood to be a recitation of a mathematical concept (i.e., mathematic calculations).) 2A Prong 2 & 2B: The claim does not recite any additional elements. Regarding Claim 23 2A Prong 1: wherein the factorized neural network layer has been factorized using a full factorization setting, deep factorization setting, or wide factorization setting. (This step is understood to be a recitation of a mathematical concept (i.e., mathematical calculations).) 2A Prong 2 & 2B: The claim does not recite any additional elements. Regarding Claim 24 2A Prong 1: The claim does not recite any Abstract idea. 2A Prong 2 & 2B: wherein the machine learning model is a deep learning model and each of the plurality of neural network layers is a factorized neural network layer except a first and a last layer of the neural network. (The specification of data to be stored is understood to be a field of use limitation - See MPEP 2106.05(h). This limitation further specifies the layer of the machine learning model.) Regarding Claim 25 2A Prong 1: The claim does not recite any Abstract idea. 2A Prong 2 & 2B: wherein the machine learning model has a transformer architecture. (The specification of data to be stored is understood to be a field of use limitation - See MPEP 2106.05(h). This limitation further specifies the machine learning model.) Regarding Claim 26 2A Prong 1: The computing system of claim 21, wherein the initial unfactorized model layer is generated using Gaussian initialization and L2-regularization. (This step is understood to be a recitation of a mathematical concept (i.e., mathematical calculations).) 2A Prong 2 & 2B: The claim does not recite any additional elements. Regarding Claim 27 2A Prong 1: The claim does not recite any Abstract idea. 2A Prong 2 & 2B: wherein the machine learning model is an embeddings model. (The specification of data to be stored is understood to be a field of use limitation - See MPEP 2106.05(h). This limitation further specifies the machine learning model.) Regarding Claim 28 2A Prong 1: The claim does not recite any Abstract idea. 2A Prong 2 & 2B: wherein the machine learning model is an embeddings model that includes a multi-headed attention block and a scaled down embedding dimension as compared to an initial model from which the factorized layer was generated. (The specification of data to be stored is understood to be a field of use limitation - See MPEP 2106.05(h). This limitation further specifies the machine learning model.) Regarding Claim 29 2A Prong 1: wherein the Frobenius decay function penalizes the squared Frobenius norm of the factorization matrices (This step is understood to be a recitation of a mathematical concept (i.e., mathematical calculations).) 2A Prong 2 & 2B: The claim does not recite any additional elements. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Nixon et al (US 20200104678 A1) describes an optimizer neural network having optimizer parameters. THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to TEWODROS E MENGISTU whose telephone number is (571)270-7714. The examiner can normally be reached Mon-Fri 9:30-5:30. 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, ABDULLAH KAWSAR can be reached at (571)270-3169. 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. /TEWODROS E MENGISTU/Primary Examiner, Art Unit 2127
Read full office action

Prosecution Timeline

Show 13 earlier events
Dec 19, 2025
Response after Non-Final Action
Feb 23, 2026
Request for Continued Examination
Mar 04, 2026
Response after Non-Final Action
Mar 18, 2026
Non-Final Rejection mailed — §101
May 18, 2026
Examiner Interview Summary
May 18, 2026
Applicant Interview (Telephonic)
Jul 20, 2026
Response Filed
Oct 07, 2026
Final Rejection mailed — §101 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12761919
SYSTEM AND METHOD FOR CONFIGURABLE AND DISTRIBUTED PROCESSING FOR QUANTUM CONTROL
5y 5m to grant Granted Oct 13, 2026
Patent 12755168
ENDPOINT DETECTION IN MANUFACTURING PROCESS BY NEAR INFRARED SPECTROSCOPY AND MACHINE LEARNING TECHNIQUES
5y 6m to grant Granted Oct 06, 2026
Patent 12749007
INITIALIZE OPTIMIZED PARAMETER IN DATA PROCESSING SYSTEM
5y 1m to grant Granted Sep 29, 2026
Patent 12737651
ENHANCED VALIDITY MODELING USING MACHINE-LEARNING TECHNIQUES
5y 8m to grant Granted Sep 15, 2026
Patent 12731048
MACHINE LEARNING MODEL TO ESTIMATE NETWORK COSTS
5y 3m to grant Granted Sep 08, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

7-8
Expected OA Rounds
50%
Grant Probability
81%
With Interview (+31.1%)
4y 5m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 148 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month