Prosecution Insights
Last updated: May 04, 2026
Application No. 18/547,759

METABOLOMIC SIGNATURE FOR THE DIAGNOSIS OF ACUTE MESENTERIC ISCHEMIA

Non-Final OA §101§102§112
Filed
Aug 24, 2023
Priority
Mar 03, 2021 — EU 21305252.5 +1 more
Examiner
EMCH, GREGORY S
Art Unit
1678
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Imperial College Of Science Technology And Medicine
OA Round
1 (Non-Final)
49%
Grant Probability
Moderate
1-2
OA Rounds
10m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 49% of resolved cases
49%
Career Allowance Rate
305 granted / 617 resolved
-10.6% vs TC avg
Strong +44% interview lift
Without
With
+44.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
39 currently pending
Career history
656
Total Applications
across all art units

Statute-Specific Performance

§101
7.5%
-32.5% vs TC avg
§103
29.6%
-10.4% vs TC avg
§102
19.8%
-20.2% vs TC avg
§112
22.1%
-17.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 617 resolved cases

Office Action

§101 §102 §112
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 1-15 have been canceled. Claims 16-31 are pending and under examination. Claim Objections Claim 16 is objected to because of the following informalities: Table 4 shows clinical data for the correlation of these LIPN, LIAB, L3TG, H4A2, LITG, TPA2 and LIPL metabolites for diagnosis of acute mesenteric ischemia (AMI). However it is noted that the aforementioned recited biomarkers are not commonly used in the field and no full names are provided in the specification. When responding to the office action, please show the full name for each, and also indicate no new matter is added . 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. Claim s 16-23 and 28-31 are rejected under 35 U.S.C. 101 the claimed invention is directed to law of nature and nature products without significantly more. The claim(s) recite(s) (1) law of nature by measuring natural molecules from a subject, i.e. isomaltose, glutamine, phenylalanine, glycerol, L1PN, 1-monoolein, L1AB, L3TG, threose, H4A2, L1TG,TPA2, and L1PL in samples, and (2) correlating a risk for acute mesenteric ischemia (AMI) . Therefore, the natural relationship is the biomarker(s) correlating with a “condition” under judicial exception. (See Mayo Collaborative Servs. v. Prometheus Laboratories, Inc. , 132 S.Ct . 1289 (2012). Note, step (c ) of claim 16 “providing an adapted care”, is not specific and is instead merely instructions to “apply” the judicial exception in a generic way. It encompasses all applications of the judicial exception(s). See, e.g., MPEP 2106.04(d)(2)(a): The Particularity Or Generality Of The Treatment Or Prophylaxis The treatment or prophylaxis limitation must be “ particular ,” i.e., specifically identified so that it does not encompass all applications of the judicial exception(s). For example, consider a claim that recites mentally analyzing information to identify if a patient has a genotype associated with poor metabolism of beta blocker medications. This falls within the mental process grouping of abstract ideas enumerated in MPEP § 2106.04(a). The claim also recites “administering a lower than normal dosage of a beta blocker medication to a patient identified as having the poor metabolizer genotype.” This administration step is particular, and it integrates the mental analysis step into a practical application. Conversely, consider a claim that recites the same abstract idea and “ providing an updated care, ” t his administration step is not particular, and is instead merely instructions to “apply” the exception in a generic way. Thus, the administration step does not integrate the mental analysis step into a practical application. Moreover, the detection o f the biomarkers uses common and well-known mass spectrometry , NMR, LC-MS, ELSA (section 0045). As to claim 28-31, all the biomarkers for AMI are natural products falling into the law of nature. Claim Inte r pretation The following is a quotation of pre-AIA 35 U.S.C. 112, sixth paragraph: An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. Claim limitation “means” invokes 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The claims in this application are given their broadest reasonable interpretation using the plain meaning of the claim language in light of the specification as it would be understood by one of ordinary skill in the art. The broadest reasonable interpretation of a claim element (also commonly referred to as a claim limitation) is limited by the description in the specification when 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is invoked. As explained in MPEP § 2181, subsection I, claim limitations that meet the following three-prong test will be interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph: (A) the claim limitation uses the term “means” or “step” or a term used as a substitute for “means” that is a generic placeholder (also called a nonce term or a non-structural term having no specific structural meaning) for performing the claimed function; (B) the term “means” or “step” or the generic placeholder is modified by functional language, typically, but not always linked by the transition word “for” (e.g., “means for”) or another linking word or phrase, such as “configured to” or “so that”; and (C) the term “means” or “step” or the generic placeholder is not modified by sufficient structure, material, or acts for performing the claimed function. Use of the word “means” (or “step”) in a claim with functional language creates a rebuttable presumption that the claim limitation is to be treated in accordance with 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The presumption that the claim limitation is interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is rebutted when the claim limitation recites sufficient structure, material, or acts to entirely perform the recited function. Absence of the word “means” (or “step”) in a claim creates a rebuttable presumption that the claim limitation is not to be treated in accordance with 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The presumption that the claim limitation is not interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is rebutted when the claim limitation recites function without reciting sufficient structure, material or acts to entirely perform the recited function. Claim limitations in this application that use the word “means” (or “step”) are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, except as otherwise indicated in an Office action. Conversely, claim limitations in this application that do not use the word “means” (or “step”) are not being interpreted under 35 U.S.C. 112(f) or pre- AIA 35 U.S.C. 112, sixth paragraph, except as otherwise indicated in an Office action. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b ) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the appl icant regards as his invention. Claim 24-27 are rejected under 35 U.S.C. 112(b) or pre-AIA 35 U.S.C. 112, second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor, or for pre-AIA the applicant regards as the invention. Claim limitation “means for measuring” invokes 35 USC 112(f) or pre-AIA USC, 112, sixth paragraph. In the specification section 0045, applicants list “means” for measuring the level, amount or concentration of recited biomarkers using well-known METHODS, such as GC-MS, LC-MS, NMR, HPLC, western blots, immunoassay, ELISA and enzymatic assays (section 0045). The specification is devoid of adequate structure to perform the claimed function. In particular, the specification merely states the claimed function of methods of performing to detect the biomarkers. There is no disclosure of any particular structure, either explicitly or inherently for performing these methods . The use of the term “ means ” is not adequate structure for performing the maintaining function because it does not describe a particular structure for the function and does not provide enough description for one of ordinary skill in the art to understand which structure or structures perform(s) the claimed function. Therefore, the claim is indefinite and is rejected under 35 U.S.C. 112(b) or pre-AIA 35 U.S.C. 112, second paragraph. Applicant may: (a) Amend the claim so that the claim limitation will no longer be interpreted as a limitation under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph; (b) Amend the written description of the specification such that it expressly recites what structure, material, or acts perform the entire claimed function, without introducing any new matter (35 U.S.C. 132(a)); or (c) Amend the written description of the specification such that it clearly links the structure, material, or acts disclosed therein to the function recited in the claim, without introducing any new matter (35 U.S.C. 132(a)). If applicant is of the opinion that the written description of the specification already implicitly or inherently discloses the corresponding structure, material, or acts and clearly links them to the function so that one of ordinary skill in the art would recognize what structure, material, or acts perform the claimed function, applicant should clarify the record by either: (a) Amending the written description of the specification such that it expressly recites the corresponding structure, material, or acts for performing the claimed function and clearly links or associates the structure, material, or acts to the claimed function, without introducing any new matter (35 U.S.C. 132(a)); or (b) Stating on the record what the corresponding structure, material, or acts, which are implicitly or inherently set forth in the written description of the specification, perform the claimed function. For more information, see 37 CFR 1.75(d) and MPEP §§ 608.01(o) and 2181. The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 24-27 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. As discussed above, the “means” disclosed in the specification all related to METHODS, and no structure or material can be found for carrying out these methods. Moreover, applicants also state using immunoassay or ELISA for detection of the biomarkers. It is known that antibody is essential for the immunoassay or ELISA (section 0054) . However applicants have not disclosed any single antibody for any specific biomarker in the specification. At least o ne of the means for carrying the detection in the filed is to use antibody specific for the biomarker , particularly for the selected bio molecules LIPN, LIAB, L3TG, H4A2, LITG, TPA2 and LIPL which are not commonly used and applicant have not provided full name for each molecule nor any known antibody for detection . With regard to the scope of the claims that includes antibodies, the Federal Circuit has clarified Written Description as it applies to antibodies in the recent decision Amgen v. Sanofi , 872 F.3d 1367 (Fed. Cir. 2017). The Federal Circuit explained in Amgen that when an antibody is claimed, 35 U.S.C. 112(a) (or pre-AIA first paragraph) requires adequate written description of the antibody itself. Amgen , 872 F.3d at 1378-79. The Amgen court expressly stated that the so-called “newly characterized antigen” test, which had been based on an example in USPTO-issued training materials and was noted in dicta in several earlier Federal Circuit decisions, should not be used in determining whether there is adequate written description under 35 U.S.C. 112(a) for a claim drawn to an antibody. Citing its decision in Ariad Pharmaceuticals, Inc. v. Eli Lilly & Co ., the court also stressed that the “newly characterized antigen” test could not stand because it contradicted the quid pro quo of the patent system whereby one must describe an invention in order to obtain a patent. Amgen , 872 F.3d at 1378-79, quoting Ariad , 598 F.3d 1336, 1345 (Fed. Cir. 2010). In view of the Amgen decision, adequate written description of an antigen alone is not considered adequate written description of a claimed antibody to that antigen, even when preparation of such an antibody is routine and conventional. Id . While generically the structure of antibodies is known, the structure of the presently recited antibodies can vary substantially within the above given claimed recitations. As noted in Amgen , knowledge that an antibody binds to a particular epitope on an antigen tells one nothing at all about the structure of the antibody, wherein “instead of analogizing the antibody-antigen relationship to a ‘key in a lock,’ it [is] more apt to analogize it to a lock and ‘a ring with a million keys on it.” (Internal citations omitted). The relevant antibody art confirms this quandary, indicating that “knowledge of an epitope or antigen used to generate a monoclonal antibody is insufficient for making the original antibody available, even if suitable in vitro test systems for screening are used.” See p. 8, lines 3-5 of WO 2009/033743 A1. Therefore, those of skill in the art would not accept that the inventor had been in possession of the full genus of antigen-binding molecules presently claimed. Functionally defined genus claims can be inherently vulnerable to invalidity challenge for lack of written description support, especially in technology fields that are highly unpredictable, where it is difficult to establish a correlation between structure and function for the whole genus or to predict what would be covered by the functionally claimed genus. Abbvie Deutschland GMBH & Co. v. Janssen Biotech , Inc. (759 F.3d 1285 (Fed. Cir. 2014). “When a patent claims a genus using functional language to define a desired result, the specification must demonstrate that the applicant has made a generic invention that achieves the claimed result and do so by showing that the applicant has invented species sufficient to support a claim to the functionally-defined genus." Capon v. Eshhar , 418 F.3d 1349 (Fed. Cir. 2005). Consequently, in the absence of sufficient recitation of distinguishing identifying characteristics, the specification does not provide adequate written description of the claimed genus of antibodies nor guidance as to which of the myriad of molecules encompassed by the claimed antibodies would meet the limitations of the claims. Further, given the well-known high level of polymorphism of immunoglobulins and antibodies, the skilled artisan would not have recognized that applicant was in possession of the vast repertoire of antibodies encompassed by the claimed invention. This rationale applies to aptamers as well because they are short, single-stranded DNA or RNA molecules (oligonucleotides) that fold into unique 3D structures to bind specific target molecules—such as proteins, peptides, and small molecules—with high affinity and specificity. They are often called "chemical antibodies." See, e.g., Vas-Cath Inc. v. Mahurkar , 19 USPQ2d 1111 (Fed. Cir. 1991), clearly states that “applicant must convey with reasonable clarity to those skilled in the art that, as of the filing date sought, he or she was in possession of the invention. The invention is, for purposes of the ‘written description’ inquiry, whatever is now claimed.” (See page 1117). The specification does not “clearly allow persons of ordinary skill in the art to recognize that [he or she] invented what is claimed.” (See Vas-Cath at page 1116). Adequate written description requires more than a mere statement that it is part of the invention and reference to a potential method of isolating it. The compound itself is required. See Fiers v. Revel , 25 USPQ2d 1601 at 1606 (CAFC 1993) and Amgen Inc. v. Chugai Pharmaceutical Co. Ltd. , 18 USPQ2d 1016 (Fed. Cir. 1991). Therefore, the instant claims do not meet the written description provision of 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA), first paragraph. 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 24-2 9 are rejected under 35 U.S.C. 102 (a)(1) and (a)(2) as being anticipated by Ral (US 20180003723) . The current claims direct to a kit comprises “means” for measuring glutamine, glycerol, isomaltose, or phenylalanine in a sample (read on claims 24-25) . Although no structure is revealed in the specification, the means limitation is interpreted for the purpose of applying any known functional equivalent prior art that can perform the measuring the level, amount or concentration of the selected biomarkers. Ral teaches measuring glutamine, glycerol, isomaltose, or phenylalanine in a sample (section 0007). Ral also teaches using kit s for measuring these biomarkers (section 0006). Ral teaches using common known methodology, such as ELISA, radioimmunoassay, MS, GC-MS, nanotechnology, fluorescence polarization immunoassay , lateral flow immunochromatography latex agglutination, western blots (section 0039). In examples, Ral uses both GC/LC-MS and ELISA. Under BRI as well as one ordinary skilled in the art, the buffers, ingredients or solutions used in GC/LC-MS, and ELISA, can be considered “means” necessary to measure ALL the recited biomarkers (read on claims 26-27). As to claims 28-29, at least one of the selected biomarkers is detected. Ral considers measuring biomarkers glutamine, glycerol, isomaltose, or phenylalanine (section 0007), therefore the measurements can be considered metabolomic signature. Conclusion No claim is allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to FILLIN "Examiner name" \* MERGEFORMAT CHANGHWA J CHEU whose telephone number is FILLIN "Phone number" \* MERGEFORMAT (571)272-0814 . The examiner can normally be reached FILLIN "Work Schedule?" \* MERGEFORMAT 8 am to 8 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, FILLIN "SPE Name?" \* MERGEFORMAT Gregory Emch can be reached at FILLIN "SPE Phone?" \* MERGEFORMAT 5712728149 . 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. FILLIN "Examiner Stamp" \* MERGEFORMAT CHANGHWA J. CHEU Primary Examiner Art Unit 1678 /CHANGHWA J CHEU/ Primary Examiner, Art Unit 1678
Read full office action

Prosecution Timeline

Aug 24, 2023
Application Filed
Feb 28, 2026
Non-Final Rejection — §101, §102, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600799
ANTI-IgG NANOBODIES
6y 0m to grant Granted Apr 14, 2026
Patent 12570710
TARGETING LILRB4 WITH CAR-T OR CAR-NK CELLS IN THE TREATMENT OF CANCER
5y 10m to grant Granted Mar 10, 2026
Patent 12332252
GFAP ACCUMULATING IN STROKE
6y 1m to grant Granted Jun 17, 2025
Patent 12138261
INHIBITORS OF BCL-2
2y 9m to grant Granted Nov 12, 2024
Patent 12071479
Antibodies Against ILT2 and Use Thereof
3y 0m to grant Granted Aug 27, 2024
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

1-2
Expected OA Rounds
49%
Grant Probability
94%
With Interview (+44.2%)
3y 7m (~10m remaining)
Median Time to Grant
Low
PTA Risk
Based on 617 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