Prosecution Insights
Last updated: April 19, 2026
Application No. 18/042,743

METHODS TO PRODUCE VERY LONG CHAIN FATTY ACIDS (VLCFA)

Non-Final OA §112
Filed
Feb 23, 2023
Examiner
DAVIS, BRIAN J
Art Unit
1614
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
The United States Department of Health and Human Services
OA Round
1 (Non-Final)
85%
Grant Probability
Favorable
1-2
OA Rounds
1y 11m
To Grant
80%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allow Rate
1317 granted / 1549 resolved
+25.0% vs TC avg
Minimal -5% lift
Without
With
+-4.8%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 11m
Avg Prosecution
47 currently pending
Career history
1596
Total Applications
across all art units

Statute-Specific Performance

§101
4.0%
-36.0% vs TC avg
§103
16.0%
-24.0% vs TC avg
§102
19.4%
-20.6% vs TC avg
§112
43.6%
+3.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1549 resolved cases

Office Action

§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 . Specification The specification is objected to as failing to provide proper antecedent basis for the claimed subject matter. See 37 CFR 1.75(d)(1) and MPEP § 608.01(o). Assuming that the working examples in the specification reflect the actual invention - as opposed to the text description of the invention and its diagramed compound formulas – then there is no proper antecedent basis for the claimed subject matter. This lack of antecedent basis arises because the diagramed formulas, in particular any diagramed formula with the [-HC=CH-]m moiety in the claims, do not encompass the compounds of the working examples. In fact, there appears to be a systematic error throughout the disclosure and the claims with respect to this diagrammatic description of the instant compounds. That is, the repeating moiety must be [-CH=CH-CH2-]m, in one form or another, in order to accurately describe/define the compounds of the working examples (e.g. compound 7-a, page 16). Correction/clarification of this error/discrepancy is required. Claim Objections Claims 10 and 11 are objected to because of the following informalities: for grammatical reasons, the indefinite article an before the term “…linolenic fatty acid…”, should properly be the indefinite article: a. Appropriate correction is required. Claim 17 is objected to because of the following informalities: for grammatical reasons, a comma should appear between the verb “reducing” and the verb “treating.” Appropriate correction is required. Inventor’s assistance is respectfully requested in correcting any other minor grammatical and/or spelling errors which may be present in the claim set. Claim Rejections - 35 USC § 112(a) 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 1-20 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 enablement requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to enable one skilled in the art to which it pertains, or with which it is most nearly connected, to make and/or use the invention. As noted above, assuming that the working examples in the specification reflect the actual invention - as opposed to the text description of the invention and its diagramed compound formulas – then there is no proper antecedent basis for the claimed subject matter. This lack of antecedent basis arises because the diagramed formulas, in particular any diagramed formula with the [-HC=CH-]m moiety in the claims, do not encompass the compounds of the working examples. In fact, there appears to be a systematic error throughout the disclosure and the claims with respect to this diagrammatic description of the instant compounds. That is, the repeating moiety must be [-CH=CH-CH2-]m, in one form or another, in order to accurately describe/define the compounds of the working examples (e.g. compound 7-a, page 16). Claim 17 is rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, because the specification, while being enabling for a method of treating or reducing some or all of the listed diseases, does not reasonably provide enablement for a method of preventing some or all of the listed diseases. The specification does not enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the invention commensurate in scope with these claims. With regard to rejections under 35 USC 112(a) or 35 USC 112, first paragraph, the following factors are considered (MPEP 2164.01(a)): a) Breadth of claims; b) Nature of invention; c) State of the prior art; d) Level of ordinary skill in the art; e) Level of predictability in the art; f) Amount of direction and guidance provided by the inventor; g) Working examples and; h) Level of experimentation needed to make or use the invention based on the content of the disclosure. a) The claim is extraordinarily broad: “A method of reducing[,] treating or preventing any of the following in a patient: heart failure,…cognitive decline, cancer…”. b,c) The nature of the invention is determined in part by the state of the prior art. As even a cursory perusal of the medicinal arts reveals, they have not advanced to the point where complex diseases with a significant genetic component, such as, for instance, cognitive decline (e.g. Alzheimer’s disease) or cancer, can be said to be prevented. d) The level of skill in the art is considered to be relatively high. e) The level of predictability in the art is considered to be relatively low. The basis of all modern medicine and biology is, of course, chemistry. Yet even under the best of circumstances, and more than two hundred years after Lavoisier laid the foundations of its modern practice, chemistry remains an experimental science. Neither the medicinal/biological arts nor the chemical arts upon which they are based have advanced to the point where certainty has replaced the need for clinical and/or laboratory experimentation. Cancer, for instance, is neither a simple disease, nor a single disease. While some cancers can be treated in some hosts using specific compounds, the effective treatment - let alone prevention - of various forms of cancer remains highly unpredictable in the art. Note that the amount of guidance or direction needed to enable the invention is inversely related to the amount of knowledge in the state of the art as well as the predictability in the art (MPEP 2164.03). f,g) The amount of direction provided by the inventor is considered to be determined by the specification and the working examples. Inventor provides no working examples which demonstrate, for instance, the efficacy of the instant compounds in the prevention of cognitive decline or cancer. The working examples are, in fact, drawn only to compound synthesis. h) It would clearly require an extraordinary - and thus undue - amount of experimentation (multi-phase clinical trials, etc.) in order to determine if, in fact, the instant compounds are actually efficacious in the prevention of, for instance, cognitive decline or cancer. Claim Rejections - 35 USC § 112(b) 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 applicant regards as his invention. Claims 1, 7-13, 15 and 20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 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 applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. The instant specification explicitly defines very long chain fatty acids as having 24-40 carbon atoms (page 1, [0001]). Yet the claims teach fatty acids – described as very long chain fatty acids in the preamble of the claims – which encompass fatty acids having as few as 16 carbon atoms. That is, the definition of the limitation very long chain fatty acids appears to differ significantly between the teachings of the specification and that of the claims. And that being the case, the limitation in the claims is unclear. Clarification is in order. Claim 14 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 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 applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. There is insufficient antecedent basis for the limitation “The long chain fatty acid of claim 12…” in the claim. Claim 12 teaches a very long chain fatty acid. Claims 8, 9, 10, 11 and 20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 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 applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. There is insufficient antecedent basis for the limitations “…alpha-linolenic fatty acid…” or “…linolenic fatty acid…” in the claims. The diagramed compounds of claim 1, the claim from which claims 8, 9, 10, 11 and 20 ultimately depend, do not encompass alpha-linolenic fatty acid or linolenic fatty acid. (Note the related 112(a) rejection above with respect to the diagramed [-HC=CH-]m moiety.) Claims 2-6 and 16-19 are also rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 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 applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. The claims all depend, or ultimately depend, upon claims which are indefinite yet do not relieve the indefiniteness. Claim 2-6 and 16-19 are also, therefore, indefinite. Notes On the Search/Examination The claimed subject matter has been searched as per MPEP 2143.03, although because of the systemic diagraming error, which appears in the both the disclosure and claims, this claimed subject matter is not enabled and does not, in fact, even appear to be the subject matter that inventor actually intended as claimed subject matter – based upon the working examples (i.e. the best available evidence of what inventor actually intended as claimed subject matter). The closest prior art, if it can be truly be called that given the 112 issues in the application, appears to be US 2013/0190399 A1 which teaches the synthesis and uses of omega-3 and omega-6 very long chain polyunsaturated acids (VLC PUFAs) (abstract). A representative synthesis is outlined on pages 8-9 for compound C28:6n3. However, these prior art compounds are not closely structurally related to the compounds comprising the instantly claimed methods of synthesis, compositions and methods of use. And that being the case, the claimed subject matter does not read on this art. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to BRIAN J DAVIS whose telephone number is (571)272-0638. The examiner can normally be reached M-F 8:30-5:00 PM EDT. 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, Ali Soroush, can be reached at 571-272-9925. 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. /BRIAN J DAVIS/Primary Examiner, Art Unit 1614 8/20/2025
Read full office action

Prosecution Timeline

Feb 23, 2023
Application Filed
Aug 20, 2025
Non-Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12594226
COMPOSITION FOR AMELIORATING SKIN CONDITION
2y 5m to grant Granted Apr 07, 2026
Patent 12594257
MEANS AND METHODS FOR IMPROVING ANTI-TUMORAL EFFICACY OF TRANSMEMBRANE CHANNEL PROTEIN BLOCKERS
2y 5m to grant Granted Apr 07, 2026
Patent 12594242
LIPID COMPOUNDS AND LIPID NANOPARTICLE COMPOSITIONS
2y 5m to grant Granted Apr 07, 2026
Patent 12595280
PHOSPHORAMIDATES FOR THE TREATMENT OF HEPATITIS B VIRUS
2y 5m to grant Granted Apr 07, 2026
Patent 12576107
METHODS OF TREATING CHRONIC INFLAMMATORY DISEASES
2y 5m to grant Granted Mar 17, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
85%
Grant Probability
80%
With Interview (-4.8%)
1y 11m
Median Time to Grant
Low
PTA Risk
Based on 1549 resolved cases by this examiner. Grant probability derived from career allow 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