Prosecution Insights
Last updated: October 04, 2026
Application No. 18/246,982

STABILIZED ALKYL NITRITE COMPOSITIONS

Non-Final OA §103
Filed
Mar 28, 2023
Priority
Oct 01, 2020 — provisional 63/198,188 +1 more
Examiner
SONG, JIANFENG
Art Unit
1613
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Emergent Product Development Gaithersburg Inc.
OA Round
3 (Non-Final)
56%
Grant Probability
Moderate
3-4
OA Rounds
0m
Est. Remaining
90%
With Interview

Examiner Intelligence

Grants 56% of resolved cases
56%
Career Allowance Rate
488 granted / 867 resolved
-3.7% vs TC avg
Strong +33% interview lift
Without
With
+33.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
77 currently pending
Career history
934
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
48.3%
+8.3% vs TC avg
§102
10.1%
-29.9% vs TC avg
§112
17.6%
-22.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 867 resolved cases

Office Action

§103
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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 07/17/2026 has been entered. Withdrawn Rejections: Applicant's amendments and arguments filed on 07/17/2026 are acknowledged and have been fully considered. The Examiner has re-weighed all the evidence of record. Any rejection and/or objection not specifically addressed below is herein withdrawn. The following rejections and/or objections are either reiterated or newly applied. They constitute the complete set of rejections and/or objections presently being applied to the instant application. The application is examined in view of isoamyl nitrite as special alkyl nitrite and Vitamin K1 as special compound of formula I. Claims 1-11, 13-17, 26-28, 30-31 and 33-35 read on the elected species and are under examination. Claims 1-11, 13-17, 26-28, 30-31 and 33-35 are pending and under examination. Claim Objections Claim 35 is objected for depending on rejected claim 1. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102 of this title, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries set forth in Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), that are applied for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claims 1-11, 13-17, 26-28, 30-31 and 33-34 are rejected under 35 U.S.C. 103 as being unpatentable over Zhang et al. (US20190282536) in view of Dreher (US20140309173) and Jamison et al. (US20130178522) evidenced by Loutit et al. (US9700564). Determination of the scope and content of the prior art (MPEP 2141.01) Zhang et al. teaches use of a nitric oxide releasing agent in preparing a medicament, wherein the medicament is used for preventing or treating EGFR inhibition associated epithelial diseases in a subject. The present application further provides a pharmaceutical composition or a kit comprising EGFR inhibitor and nitric oxide releasing agent (abstract). In some embodiments, the epithelial cell comprises skin epithelial cell, oral epithelial cell, stomach epithelial cell and/or small intestine epithelial cell ([0014]). In some embodiments, the nitric oxide releasing agent comprises organic molecule, wherein organic molecule comprises nitroglycerin, isosorbide mononitrate, butanediol mononitrate, pentaerythritol tetranitrate, isosorbide dinitrate, trolnitrate, nicorandil, nitro dihydroxyl methyl butanol, 5-amino-3-(4-morpholinyl)-1,2,3-oxadiazole, isoamyl nitrite ([0021]). In some embodiments, the drug is prepared for topical administration. In some embodiments. In some embodiments, the concentration of the nitric oxide releasing agent in the drug is from about 0.0001% (w/w) to about 50% (w/w). In some embodiments, the medicament is prepared as an ointment ([0029-0031]. In some embodiments, the EGFR-inhibition associated epithelial cell diseases may be classified into skin epithelial cell diseases (e.g., rash, acne, rosacea, atopic dermatitis, contact dermatitis, seborrheic dermatitis, lupus, scleroderma, pemphigus, pigmentation, black spot, leukoderma, urticaria, tinea corporis, the skin pruritus, alopecia, hair changes, erythema, paronychia and schizonychia, xerosis cuits, hypersensitivity and psoriasis) ([0117]). n some embodiments, the epithelial cell diseases may be skin epithelial cell diseases. In some embodiments, the skin epithelial cell diseases may be rash and pruritus ([0118]). The composition may comprises additional therapeutic agents. In some embodiments, the one or more additional therapeutic agents may be a medicament for treating epithelial diseases ([0165]). Medicaments for treating epithelial diseases may comprise anti-inflammatory agents, analgesics, local anesthetics, antihistamines, preservatives, immuosuppressors, antihemorrhagic agents and/or a mixture thereof ([0166]). Antihemorrhagic agents may comprise thrombin, vitamin Kl, protamine sulfate, aminocaproic acid, tranexamic acid, carbazochrome, sodium carbazochrome sulfonate, rutin and/or hesperidin ([0172]). In some embodiments, the medicament or the nitric oxide releasing agent of the present application may be used for topically oral administration ([0183]). The nitric oxide releasing agent as described in the present application may be administered in a manner well known in the art, e.g., by injection (e.g., subcutaneous, intraperitoneal, intraarticular, intraarterial, intrathecal, intrasternal, intrathecal, intralesional, intracranial, intramuscular, intracutaneous and intravenous injection or infusion) or non-injection (e.g., oral, nasal, sublingual, vaginal, rectal, or topical administration). The nitric oxide releasing agent as disclosed in the present application may be administered in a form of the pharmaceutical composition or kit of the present application ([0158]). Dreher teaches compositions of the invention to treat, alleviate, and/or ameliorate a symptom, condition, disorder, or disease of the skin or mucosa, wherein the symptom, condition, disorder, or disease is associated with changes in extracellular matrix components (abstract). Compositions according to the present invention were also studied for the treatment of other conditions, disorders and diseases where extracellular matrix components are altered including atopic dermatitis, eczema, scars and keloids, atrophie blanche, vulvar lichen sclerosus, epidermolysis bullosa, Ehlers-Danlos syndromes, and the Marfan syndrome ([0428]). The compositions of the present invention may contain one or more vitamins such as Vitamin K from about 0.0001% to about 25% or 0.001% to about 10% by weight ([0212]). In addition, the compositions according to the present invention may also be applied by topical, by injection, implantation, or subcutaneous placement ([0309-0310]). Jamison et al. teaches pharmaceutical composition comprising vitamin C and chromium-free vitamin K, and optionally one or more pharmaceutically acceptable excipient(s) (abstract). In certain embodiments, the vitamin K provided herein is vitamin K1, vitamin K2, vitamin K3, vitamin K4, or vitamin K5, or a mixture of two or more thereof ([0042]). The pharmaceutical compositions provided herein can be administered intranasally or by inhalation to the respiratory tract. The pharmaceutical compositions provided herein can be micronized to a size suitable for delivery by inhalation ([0112, 014]). In certain embodiments, the proliferative disease is an inflammatory disease, including, but not limited to, systemic anaphylaxis, hypersensitivity disorders, hypersensitivity lung diseases, cystic fibrosis, atopic dermatitis, urticaria, drug allergies, insect sting allergies, food allergies, celiac disease, mastocytosis, vasculitis, Behcet's syndrome, psoriasis, inflammatory dermatoses, dermatitis, eczema, atopic dermatitis, allergic contact dermatitis, urticaria, autoimmune diseases, tissue transplant rejection, graft rejection, graft-versus-host disease, wound healing, kidney disease, myasthenia gravis, multiple sclerosis, Graves' disease, glomerulonephritis, thyroiditis, diabetes, sarcoidosis, allergic rhinitis, otitis media, allergic conjunctivitis, inflammatory bowel diseases, Crohn's disease, ulcerative colitis (UC), ileitis, enteritis gastritis, helicobacter polori-associated gastritis, systemic lupus erythematosis (SLE), arthritis, rheumatoid arthritis, psoriatic arthritis, rheumatoid arthritis, osteoporosis, asthma, respiratory allergic disease, aseptic osteolysis, systematic informatory response syndrome, chronic obstructive pulmonary disease (COPD), fever, headache, inflammation of the plural cavities, perotonitis, and pleuricy ([0152]). Loutit et al. teaches A method for treating a pulmonary infection in a human having cystic fibrosis, further comprising administering by inhalation dornase alpha, azithromycin, salbutamol, pancrelipase, sodium chloride, seretide, vitamin A, vitamin D, vitamin E, vitamin K, or a combination of two or more thereof (claims 1 and 8). Ascertainment of the difference between the prior art and the claims (MPEP 2141.02) The difference between the instant application and Zhang et al. is that Zhang et al. do not expressly teach amount of Vitamin K1. This deficiency in Zhang et al. is cured by the teachings of Dreher. Finding of prima facie obviousness Rational and Motivation (MPEP 2142-2143) It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Zhang et al., as suggested by Dreher, and produce the instant invention. One of ordinary skill in the art would have been motivated to optimize and have the amount of Vitamin K1 from about 0.1% to about 20% (about 3% to about 18% or 10%) because this optimization through routing experimentation. MPEP 2144.05. It is within skill of one artisan in the art to have claimed range of about 0.1% to about 20% (about 3% to about 18% or 10%) after optimization through routing experimentation, especially in the absence of showing criticality. Alternatively, one of ordinary skill in the art would have been motivated to optimize and have the amount of Vitamin K1 from about 0.1% to about 20% (about 3% to about 18% or 10%) because this optimization under prior art condition. MPEP 2144.05. Under guidance from Dreher teaching about 0.001% to about 10% of vitamin K in a composition for treating skin epithelial disease, it is obvious for one of ordinary skill in the art to have the amount of Vitamin K1 from about 0.1% to about 20% (about 3% to about 18% or 10%) and produce instant claimed invention with reasonable expectation of success. Regarding the limitation of wherein the composition is suitable for administration by inhalation, Zhang et al. teaches the composition comprising isoamyl nitrite for nasal administration, thus, suitable for inhalation. As evidenced by Jamison et al. and Loutit et al. that vitamin K is suitable for inhalation, the composition comprising isoamyl nitrite and vitamin K1 is suitable for inhalation. Furthermore, Dreher is properly relied on for teaching the range of vitamin K1 at about 0.001% to about 10%, which is not limited for topical application, and since Jamison et al. teaching composition comprising Vitamin K for treating atopic dermatitis, Dreher’s composition comprising Vitamin K or treating atopic dermatitis also can be administered by inhalation. Prior art teaches a composition comprising nitric oxide releasing agent isoamyl nitrite and skin epithelial diseases treating active Vitamin K1 at about 0.1% to about 20% (about 3% to about 18% or 10%). Regarding the limitation of wherein the composition comprising the alkyl nitrile has a purity after storage at 40C for six months, ranging from about 90% to about 95%, as measured by gas chromatography”, this is regarded as inherency of prior art composition. Since prior art teaches the same or substantially same composition, this same or substantially same composition is expected to have the same properties. MPEP 2112, "[T]he discovery of a previously unappreciated property of a prior art composition, or of a scientific explanation for the prior art’s functioning, does not render the old composition patentably new to the discoverer." Atlas Powder Co. v. IRECO Inc., 190 F.3d 1342, 1347, 51 USPQ2d 1943, 1947 (Fed. Cir. 1999). Thus the claiming of a new use, new function or unknown property which is inherently present in the prior art does not necessarily make the claim patentable. In re Best, 562 F.2d 1252, 1254, 195 USPQ 430, 433 (CCPA 1977). There is no requirement that a person of ordinary skill in the art would have recognized the inherent disclosure at the relevant time, but only that the subject matter is in fact inherent in the prior art reference. Schering Corp. v. Geneva Pharm. Inc., 339 F.3d 1373, 1377, 67 USPQ2d 1664, 1668 (Fed. Cir. 2003). Regarding claim 16, it is within skill of one artisan in the art to store the composition comprising unstable substance such as alkyl nitrile in ampule under inert gas. Regarding claim 33, since prior art composition is suitable for inhalation, it is suitable for inhaler. In light of the forgoing discussion, the Examiner concludes that the subject matter defined by the instant claims would have been obvious within the meaning of 35 USC 103. From the teachings of the references, it is apparent that one of ordinary skill in the art would have had a reasonable expectation of success in producing the claimed invention. Therefore, the invention as a whole was prima facie obvious to one of ordinary skill in the art before the effective filing date of the claimed invention, as evidenced by the references, especially in the absence of evidence to the contrary. Response to Argument: Applicants argued that there is no teaching the composition is suitable for administration by inhalation, and all related arguments are incorporated herein by reference. In response to this argument: this is not persuasive. Regarding the limitation of wherein the composition is suitable for administration by inhalation, Zhang et al. teaches the composition comprising isoamyl nitrite for nasal administration, thus, suitable for inhalation. As evidenced by Jamison et al. and Loutit et al. that vitamin K is suitable for inhalation, the composition comprising isoamyl nitrite and vitamin K1 is suitable for inhalation. Furthermore, Dreher is properly relied on for teaching the range of vitamin K1 at about 0.001% to about 10%, which is not limited for topical application, and since Jamison et al. teaching composition comprising Vitamin K for treating atopic dermatitis, Dreher’s composition comprising Vitamin K or treating atopic dermatitis also can be administered by inhalation. Therefore, the 103 rejection is still proper. Applicants argued that there is no teaching vitamin K1 as stabilizing agent. In response to this argument: this is not persuasive. Regarding there is no teaching vitamin K1 as stabilizing agent, it is agued that "[T]he discovery of a previously unappreciated property of a prior art composition, or of a scientific explanation for the prior art’s functioning, does not render the old composition patentably new to the discoverer." Atlas Powder Co. v. IRECO Inc., 190 F.3d 1342, 1347, 51 USPQ2d 1943, 1947 (Fed. Cir. 1999). Thus the claiming of a new use, new function or unknown property which is inherently present in the prior art does not necessarily make the claim patentable. In re Best, 562 F.2d 1252, 1254, 195 USPQ 430, 433 (CCPA 1977). There is no requirement that a person of ordinary skill in the art would have recognized the inherent disclosure at the relevant time, but only that the subject matter is in fact inherent in the prior art reference. Schering Corp. v. Geneva Pharm. Inc., 339 F.3d 1373, 1377, 67 USPQ2d 1664, 1668 (Fed. Cir. 2003). Therefore, the 103 rejection is still proper. Applicants argue about results from example 1. In response to this argument: this is not persuasive. It appears that applicants only has good stability after 6M for 10% of vitamin K1, and this data is not sufficient to overcome the 103 rejection at least for the following reasons. Firstly, applicants failed to compare with closest prior art, for example, composition comprising other active such as rutin (different from Vitamin K1). Secondly, the results are not commensurate with scope of claimed invention that having broad range of vitamin K1 (1-20%). Furthermore, applicants only have data for vitamin K1, and not data for other compounds of formula I. Therefore, the 103 rejection is still proper. MPEP 2141 III states: “The proper analysis is whether the claimed invention would have been obvious to one of ordinary skill in the art after consideration of all the facts.” Respectfully, after weighing all the evidence, the Examiner has reached a determination that the instant claims are not patentable in view of the preponderance of evidence and consideration of all the facts which is more convincing than the evidence which has been offered in opposition to it. Conclusion No claim is allowed. The examiner tried to discuss with applicants regarding potential allowable subject. However, the voicemail to applicant’s representative results in no response. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JIANFENG SONG. Ph.D. whose telephone number is (571)270-1978. The examiner can normally be reached M-F 8-5. 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, Brian-Yong Kwon can be reached at (571)272-0581. 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. /JIANFENG SONG/Primary Examiner, Art Unit 1613
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Prosecution Timeline

Mar 28, 2023
Application Filed
Oct 01, 2025
Non-Final Rejection mailed — §103
Dec 19, 2025
Response Filed
Feb 20, 2026
Final Rejection mailed — §103
Jul 17, 2026
Request for Continued Examination
Jul 20, 2026
Response after Non-Final Action
Sep 16, 2026
Non-Final Rejection mailed — §103 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
56%
Grant Probability
90%
With Interview (+33.2%)
2y 8m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 867 resolved cases by this examiner. Grant probability derived from career allowance rate.

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