Prosecution Insights
Last updated: August 14, 2026
Application No. 18/500,142

METHOD FOR TREATING AMYOTROPHIC LATERAL SCLEROSIS AND METHOD FOR SUPPRESSING PROGRESS OF AMYOTROPHIC LATERAL SCLEROSIS

Final Rejection §103
Filed
Nov 02, 2023
Priority
Oct 04, 2017 — provisional 62/567,873 +3 more
Examiner
SAEED, KAMAL A
Art Unit
1626
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Shionogi Inc.
OA Round
2 (Final)
84%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
1011 granted / 1206 resolved
+23.8% vs TC avg
Moderate +10% lift
Without
With
+9.6%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 0m
Avg Prosecution
24 currently pending
Career history
1227
Total Applications
across all art units

Statute-Specific Performance

§101
2.5%
-37.5% vs TC avg
§103
8.9%
-31.1% vs TC avg
§102
6.8%
-33.2% vs TC avg
§112
16.6%
-23.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1206 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 . Claims 1-20 are currently pending in this Application. Response to Amendment Applicants’ Amendment and Response, submitted May 19, 2026, has been reviewed by the Examiner and entered of record in the file. Claim Rejections - 35 USC § 103 Maintained The request for reconsideration has been considered but does NOT place the application in condition for allowance. Applicants argue that claim 1 (as currently amended) of the present invention is directed to a method for treating amyotrophic lateral sclerosis, and it is respectfully submitted that the ALSFD article, the Ferguson article, Ikeda, the Bali article, and their combinations do not teach or suggest "preparing seven pairs of codes selected from codes identified and/or defined by ICD-9 code and CPT code; and administering an effective amount of 3-methyl-1-phenyl-2-pyrazolin-5-one or a physiologically acceptable salt thereof to a person who has not been diagnosed with amyotrophic lateral sclerosis for a period of time prior to being diagnosed as a patient having an amyotrophic lateral sclerosis, wherein the person has been treated and/or diagnosed to meet all of the seven pairs of codes for past twelve months, and the seven pairs of codes are a pair of CPT code 82550 and ICD-9 code 728.87, a pair of ICD-9 code 728.87 and ICD-9 code 780.79, a pair of CPT code 82607 and ICD-9 code 728.87, a pair of CPT code 82550 and CPT code 86038, a pair of CPT code 82550 and CPT code 82607, a pair of ICD-9 code 787.20 and CPT code 74230, and a pair of ICD-9 code 780.79 and CPT code 82550" as recited in amended Claim 1. Applicants argument was fully considered but was not found to be persuasive. The instant claims narrow the patient population to wherein "the patient treated and/or diagnosed to meet all of the seven pairs of codes for past twelve months, and the seven pairs of codes ". However, it would have been obvious to one having ordinary skill in the art at the time of the invention to limit the patient population by performing the laboratory and other diagnostic tests or observations as suggested and taught by Bali et al. The same product is used to treat patient population suspected to have ALS or those diagnosed with ALS. The instant claims are still directed to a method of treating patients who has not yet being diagnosed with ALS and patients who has being diagnosed with ALS using the same products as US Patent No. U.S. Patent No. 6,933,310. See claim 20. It would have been prima facie obvious for a person of ordinary skill in the art before the effective filing date of the claimed invention to use teachings of U.S. Patent No. 6,933,310 in view of Bali et al to create the instantly claimed invention. The methods are using identical products to treat ALS. The patent population can be limited by performing the laboratory and other diagnostic tests or observations as suggested and taught by Bali et al. As such a person of ordinary skill in the art would have had a reasonable expectation of success in using the method described in Kinoshita et al. A reference is good not only for what it teaches by direct anticipation but also for what one of ordinary skill in the art might reasonably infer from the teachings. (In re Opprecht 12 USPQ 2d 1235, 1236 (Fed Cir. 1989); In re Bode 193 USPQ 12 (CCPA) 1976). In light of the foregoing discussion, the Examiner concludes that the subject matter defined by the instant claims would have been obvious within the meaning of 35 USC 103(a). 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 at the time the invention was made, as evidenced by the references, especially in the absence of evidence to the contrary. Accordingly, claims 1-20 are rendered obvious in view of the reference above. Applicant might consider providing evidence of unexpected results to overcome the rejection. Previous Rejection Maintained Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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, 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1-20 are rejected under 35 U.S.C. 103(a) as being unpatentable over AKIMO, “Open-label 24-week extension study of edaravone (MCI-186) in amyotrophic lateral sclerosis,” Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration, Vol. 18, pp. 55-63, 2017) in view of Toby A. Ferguson et al: “Clinical presentation and diagnosis of amyotrophic lateral sclerosis,” NeuroRehabilitation 22.6 (2007): 409-416. The instant claims 1-20 are directed to methods of treating ALS ( see claim 1) or suppressing the progress of ALS (see claim 7) using Edaravone, 3-methyl-1-phenyl-2-pyrazolin-5-one, PNG media_image1.png 143 175 media_image1.png Greyscale . The instant claims also recite some limitation on the patient population, wherein the potential patient population that can be treated exhibit a diagnosis that meets all of the seven pairs codes, wherein the seven pairs of codes are: a pair of CPT code 82550 (CK or CPK lab test) and ICD-9 code 728.87 (muscle weakness); a pair of ICD-9 code 728.87 (muscle weakness) and ICD-9 code 780.79 (malaise and fatigue), a pair of CPT code 82607 (Vitamin B12 test) and ICD-9 code 728.87 (muscle weakness); a pair of CPT code 82550 (CK or CPK lab test) and CPT code 86038 (a heterophile antibody screening test); a pair of CPT code 82550 (CK or CPK lab test) and CPT code 82607 (Vitamin B12 test); a pair of ICD-9 code 787.20 (dysphagia, unspecified) and CPT code 74230 (radiological examination of swallowing function); and a pair of ICD-9 code 780.79 (malaise and fatigue) and CPT code 82550 (CK or CPK lab test). Claims 2-20 limit the method of admiration or the time range prior to being diagnosed by ALS. Determination of the scope and contents of the prior art AKIMO teach edaravone, PNG media_image1.png 143 175 media_image1.png Greyscale for treating patients who meets all of the following criteria (scores 2 points on all 12 items of the revised ALS functional rating scale (ALSFRS-R), forced vital capacity 80 % definite or probable ALS, and disease duration 2 years. (see Abstract; and Section “Patients” on page 56). The ALSFRS-R measures 12 aspects of physical function, ranging from one's ability to swallow and use utensils to climbing stairs and breathing. Each function is scored from 4 (normal) to 0 (no ability), with a maximum total score of 48 and a minimum total score of 0. AKIMO also teach method of administration. AKIMO teaches administering edaravone for 14 consecutive days followed by a 14-day drug-free period in Cycle1, and administering for 10 days within a 14-day period followed by a 14-day drug free period in Cycle 2 and thereafter ( see, Section “Study design” on page 56, right column). AKIMO does not teach wherein the patient is identified by a diagnosis which meets all Pairs 1-7.Toby A. Ferguson et al which relates to ALS and thus is in the same technical field as present application teaches a method of diagnosing ALS through clinical symptoms such as muscle weakness and dysphagia, and clinical examinations, such as creatine kinase examination, vitamin B12 examination, and antinuclear antibody examination (see the full article, including abstract; Tables 2-3) Resolving the Level of Ordinary Skill in the Pertinent Art “Factors that may be considered in determining level of ordinary skill in the art include: (1) the educational level of the inventor; (2) type of problems encountered in the art; (3) prior art solutions to those problems; (4) rapidity with which innovations are made; (5) sophistication of the technology; and (6) the education level of active workers in the field.” Envtl. Designs, Ltd. V. Union Oil Co., 713 F.2d 693, 696 (Fed. Cir. 1983) (citing Orthopedic Equip. Co. v. All Orthopedic Appliances, Inc., 707 F.3d 1376, 1381-82 (Fed. Cir. 1983)). The above factors are not exhaustive, but are a guide. Id. In this case, the education level of the inventor and the education level of active workers in the field of organic chemistry, as well as the high degree of sophistication required to solve problems encountered in the art, a person of ordinary skill in the art would likely have at least a college degree in the field of organic chemistry, with industry experience, i.e., a masters or doctorate level of skill and knowledge in the laboratory. Thus, the level of skill in the art is relatively high. Finding of prima facie obviousness The Supreme Court in KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398, 415-421, 82 USPQ2d 1385, 1395-97 (2007) identified a number of rationales to support a conclusion of obviousness which are consistent with the proper "functional approach" to the determination of obviousness as laid down in Graham. See MPEP 2143. Examples of rationales that may support a conclusion of obviousness include: (A) Combining prior art elements according to known methods to yield predictable results; (B) Simple substitution of one known element for another to obtain predictable results; (C) Use of known technique to improve similar devices (methods, or products) in the same way; (D) Applying a known technique to a known device (method, or product) ready for improvement to yield predictable results; (E) "Obvious to try" — choosing from a finite number of identified, predictable solutions, with a reasonable expectation of success; (F) Known work in one field of endeavor may prompt variations of it for use in either the same field or a different one based on design incentives or other market forces if the variations are predictable to one of ordinary skill in the art; (G) Some teaching, suggestion, or motivation in the prior art that would have led one of ordinary skill to modify the prior art reference or to combine prior art reference teachings to arrive at the claimed invention. Note that the list of rationales provided is not intended to be an all-inclusive list. Other rationales to support a conclusion of obviousness may be relied upon by Office personnel. Here one or more of rationales (C) and (G) apply. It would have been prima facie obvious for a person of ordinary skill in the art before the effective filing date of the claimed invention to combine the teachings of AKIMO and Toby A. Ferguson et al to use edaravone to treat a patient population characterized by the ALS diagnostic criteria taught by Toby A. Ferguson et al. In the absence of unexpected results, one skilled in the art would use edaravone to treat the patient population described in the instant claims The methods are using identical products to treat ALS. The patient population can be limited by performing the laboratory and other diagnostic tests taught by Toby A. Ferguson et al. As such a person of ordinary skill in the art would have had a reasonable expectation of success in using the method described in the instant claims. A reference is good not only for what it teaches by direct anticipation but also for what one of ordinary skill in the art might reasonably infer from the teachings. (In re Opprecht 12 USPQ 2d 1235, 1236 (Fed Cir. 1989); In re Bode 193 USPQ 12 (CCPA) 1976). In light of the foregoing discussion, the Examiner concludes that the subject matter defined by the instant claims would have been obvious within the meaning of 35 USC 103(a). 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 at the time the invention was made, as evidenced by the references, especially in the absence of evidence to the contrary. Accordingly, claims 1-20 are rendered obvious in view of the references above. Applicant might consider providing evidence of unexpected results to overcome the rejection. Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. 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) A patent may not be obtained though the invention is not identically disclosed or described as set forth in section 102 of this title, if the differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art to which said subject matter pertains. Patentability shall not be negatived 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(a) 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 1-20 are rejected under 35 U.S.C. 103(a) as being unpatentable over U.S. Patent No. 6,933,310 in view of Bali et al Missouri Medicine | September/October 2013| 110:5 | 417 The instant claims are directed to methods of treating ALS using Edaravone, 3-methyl-1-phenyl-2-pyrazolin-5-one, PNG media_image1.png 143 175 media_image1.png Greyscale . The instant claims also recite some limitation on the patient population and subpopulation that can be treated based on some test. Some of the tests to limitations include increased CK levels; increase in more diagnostic and laboratory examinations such as muscles weakness test, B12, TSH, CK, swallowing test ” etc. Determining the Scope and Contents of the Prior Art U.S. Patent No. 6,933,310 teach are directed to methods of treating ALS using products of the same Formula, 3-methyl-1-phenyl-2-pyrazolin-5-one, PNG media_image1.png 143 175 media_image1.png Greyscale . U.S. Patent No. 6,933,310 do not limit the patent population that are treated with the aforementioned products. Bali et al teaches management of ALS and also teaches tests that are done to patients suspected to have ALS. These tests include: muscles weakness test, B12, TSH, CK, swallowing test Ascertaining the Difference Between the Prior Art and Claims The above reference teaches the same process as disclosed in the instant invention using a solvent mixture containing a ketone, water and acetic acid. In regards to claim 19 the prior art is silent to the particular crystalline form. Resolving the Level of Ordinary Skill in the Pertinent Art “Factors that may be considered in determining level of ordinary skill in the art include: (1) the educational level of the inventor; (2) type of problems encountered in the art; (3) prior art solutions to those problems; (4) rapidity with which innovations are made; (5) sophistication of the technology; and (6) the education level of active workers in the field.” Envtl. Designs, Ltd. V. Union Oil Co., 713 F.2d 693, 696 (Fed. Cir. 1983) (citing Orthopedic Equip. Co. v. All Orthopedic Appliances, Inc., 707 F.3d 1376, 1381-82 (Fed. Cir. 1983)). The above factors are not exhaustive, but are a guide. Id. In this case, the education level of the inventor and the education level of active workers in the field of organic chemistry, as well as the high degree of sophistication required to solve problems encountered in the art, a person of ordinary skill in the art would likely have at least a college degree in the field of organic chemistry, with industry experience, i.e., a masters or doctorate level of skill and knowledge in the laboratory. Thus, the level of skill in the art is relatively high. Objective Evidence in the Application Indicating Obviousness or Nonobviousness The Supreme Court in KSK International Co. v. Teleflex lnc.^ 550 U.S. 398, 127 S. Ct. 1727, 82 USPQ2d 1385, 1395-97 (2007) identified a number of rationales to support a conclusion of obviousness which are consistent with the proper “functional approach” to the determination of obviousness as laid down in Graham. The key to supporting any rejection under 35 U.S.C. 103 is the clear articulation of the reason(s) why the claimed invention would have been obvious. The Supreme Court in KSK noted that the analysis supporting a rejection under 35 U.S.C. 103 should be made explicit. Exemplary rationales that may support a conclusion of obviousness include: (A) Combining prior art elements according to known methods to yield predictable results; (B) Simple substitution of one known element for another to obtain predictable results; (C) Use of known technique to improve similar devices (methods, or products) in the same way; (D) Applying a known technique to a known device (method, or product) ready for improvement to yield predictable results; (E) “Obvious to try” — choosing from a finite number of identified, predictable solutions, with a reasonable expectation of success; (F) Known work in one field of endeavor may prompt variations of it for use in either the same field or a different one based on design incentives or other market forces if the variations are predictable to one of ordinary skill in the art; (G) Some teaching, suggestion, or motivation in the prior art that would have led one of ordinary skill to modify the prior art reference or to combine prior art reference teachings to arrive at the claimed invention. Note that the list of rationales provided is not intended to be an all-inclusive list. Other rationales to support a conclusion of obviousness may be relied upon by Office personnel. Here one or more of rationales (D) and (G) apply. It would have been prima facie obvious for a person of ordinary skill in the art before the effective filing date of the claimed invention to use teachings of U.S. Patent No. 6,933,310 in view of Bali et al to create the instantly claimed invention. The methods are using identical products to treat ALS. The patent population can be limited by performing the laboratory and other diagnostic tests or observations as suggested and taught by Bali et al. As such a person of ordinary skill in the art would have had a reasonable expectation of success in using the method described in Kinoshita et al. A reference is good not only for what it teaches by direct anticipation but also for what one of ordinary skill in the art might reasonably infer from the teachings. (In re Opprecht 12 USPQ 2d 1235, 1236 (Fed Cir. 1989); In re Bode 193 USPQ 12 (CCPA) 1976). In light of the foregoing discussion, the Examiner concludes that the subject matter defined by the instant claims would have been obvious within the meaning of 35 USC 103(a). 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 at the time the invention was made, as evidenced by the references, especially in the absence of evidence to the contrary. Accordingly, claims 1-20 are rendered obvious in view of the reference above. Applicant might consider providing evidence of unexpected results to overcome the rejection. Conclusion No claim is currently allowed. Accordingly, 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 extension fee 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. Telephone Inquiry Any inquiry concerning this communication or earlier communications from the examiner should be directed to KAMAL A SAEED whose telephone number is (571) 272-0705. 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, Adam C Milligan can be reached at (571)270-7674. 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 /Kamal A Saeed/ Primary Examiner, Art Unit 1626
Read full office action

Prosecution Timeline

Nov 02, 2023
Application Filed
Nov 20, 2025
Non-Final Rejection mailed — §103
Jan 07, 2026
Applicant Interview (Telephonic)
Jan 09, 2026
Examiner Interview Summary
May 19, 2026
Response Filed
Jul 22, 2026
Final Rejection mailed — §103 (current)

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Prosecution Projections

3-4
Expected OA Rounds
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Grant Probability
93%
With Interview (+9.6%)
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