Prosecution Insights
Last updated: October 04, 2026
Application No. 17/920,921

METHOD OF MANUFACTURING HALOGEN OXOACID AND MANUFACTURING APPARATUS THEREFOR

Non-Final OA §103§DOUBLEPATENT
Filed
Oct 24, 2022
Priority
Jun 07, 2021 — JP 2021-094936 +1 more
Examiner
BAHTA, MEDHANIT W
Art Unit
1692
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Tokuyama Corporation
OA Round
3 (Non-Final)
81%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allowance Rate
640 granted / 794 resolved
+20.6% vs TC avg
Strong +28% interview lift
Without
With
+28.2%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 1m
Avg Prosecution
45 currently pending
Career history
829
Total Applications
across all art units

Statute-Specific Performance

§101
1.5%
-38.5% vs TC avg
§103
40.4%
+0.4% vs TC avg
§102
15.7%
-24.3% vs TC avg
§112
29.2%
-10.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 794 resolved cases

Office Action

§103 §DOUBLEPATENT
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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 06/03/2026 has been entered. Status of the Claims The amendment filed on 06/03/2026 has been entered. Claim 1 has been amended and claim 7 has been canceled. Thus, claims 1-2 and 8-13 are currently pending; claims 8-13 have been withdrawn from further consideration and claims 1-2 are under current examination. 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 (i.e., changing from AIA to pre-AIA ) 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 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 1-2 are rejected in a modified form (see underlined) under 35 U.S.C. 103 as being unpatentable over Patent application publication number US2005/0176603A1 (US’603; cited in IDS 01/23/2023) in view of Patent number JP2007105668A (JP’668; cited in IDS 01/23/2023 and machine translation cited in PTO-892 08/20/2025). Regarding claim 1, US’603 teaches a method for the production of TMAOCl solution (halogen oxoacid) by the reaction of 25% TMAH (tetramethylammonium hydroxide) (organic alkaline solution) with chlorine gas ([0048]-[0049]). US’603 fails to teach continuously supplying an organic alkaline solution and a halogen from a first end to a second end of a reaction tube so that liquid phase parts and gas phase parts are alternately and repeatedly provided in a transfer passage of the reaction tube, in pseudo-plug flow, to perform gas-liquid mixing of the organic alkaline solution and the halogen at the liquid phase parts and/or gas phase parts; wherein the reaction tube has an axis extending from the first end to the second end of the reaction tube and extends in an axial direction while circling around the axis, is arranged to extend substantially in a horizontal direction, is formed in a spiral shape having a spiral axis coinciding with the axis, circles around the axis two or more times, the inner diameter of the spirally formed circles is 30 mm or more and 3000 mm or less, and contains a fluororesin; and an average inner diameter of the reaction tube is 5 mm or greater. However, the deficiencies are cured by JP’668. Regarding claim 1, JP’668 teaches a gas-liquid reaction method and an apparatus therefor, and more particularly a method and an apparatus therefor for efficiently carrying out a reaction in a gas-liquid multiphase flow using a micro-tubular reactor having two or more gas inlet ports into a micro-channel. The reference teaches that a gas-liquid reaction method in which a liquid component containing a reaction substrate and a gas component containing a reaction gas are caused to flow through a micro-tubular reactor, and the reaction substrate and the reaction gas are caused to react in the microtubular reactor to obtain a reaction product, characterized in that the equivalent diameter of the inner diameter of the micro-tubular reactor is 5 to 10,000 5 to 10,000 μm (or 0.005-100 mm), and the gas component containing the reaction gas is introduced into the micro-tubular reactor from two or more positions in the flow direction of the micro-tubular reactor ([0009]). The state of the gas-liquid multiphase flow flowing through the micro-tubular reactor in the present invention includes a plug flow in which gas plugs and liquid plugs flow alternately ([0037] and [0054]). JP’668 further teaches in [0056] that the gas-liquid reaction method of the present invention is preferably carried out by using a gas-liquid reaction apparatus having a microtubular reactor and a liquid supply device and a gas supply device upstream of the supply section of the micro-tubular reactor, and by circulating a gas component containing a reactant gas and a liquid component containing a reaction substrate, thus rendering a continuous process. Furthermore, JP’668 teaches that when the length of the reactor is increased in order to increase the residence time, the reactor may be coiled to avoid the apparatus becoming large ([0026]). As such, it is understood that the reaction tube has an axis extending from the first end to the second end of the reaction tube and extends in an axial direction while circling around the axis and the reaction tube is formed in a spiral shape having a spiral axis coinciding with the axis. The first and second microreactors 5 and 6 in JP’668 is arranged to extend substantially in a horizontal direction (the figure) and the first and second microreactors 5 and 6 in JP’668 are made of Teflon ([0064]). The reference does not explicitly teach the newly recited limitation "circles around the axis two or more times, the inner diameter of the spirally formed circles is 30 mm or more and 3000 mm or less", however, there is no criticality of having such feature over JP'668. The use of the reaction tube in both methods of the instant invention and JP'668 result in a plug-flow, and that circling the coiled form of JP'668 around the axis any number of times and any number of the inner diameter of the coiled circles formed in JP'668, including those of the claimed invention, would yield nothing more than the plug flow in which the gas reactant parts and the liquid reactant parts flow alternately, i.e. the same feature observed in the claimed invention. JP’668 teaches that the conventional methods requires a large capacity vessel and industrially, the reactions have been carried out on a large scale bubble columns, packed columns, etc. leading to a confinement reaction or a method using a large-scale reactor, and the reaction rate is limited by the rate of dissolution of the gas from the gas phase to the liquid phase, resulting in a low reaction rate and low productivity ([0002]-[0003]). The reference thus discusses that the use of a micro-tubular reactor is suitable for increasing the dissolution rate of a reaction gas into a liquid phase is effective by improving the efficiency of a gas-liquid reaction ([0008]). Moreover, JP’668 teaches that the volume ratio of the reaction gas to the liquid phase containing the reaction substrates in the micro-tubular reactor can be reduced by introducing the reaction gas from two or more locations in the flow direction (tube length direction) of the micro-tubular reactor, and as a result, the residence time of the reaction substrates in the micro-tubular reactor can be extended, thereby improving the yield and increasing the productivity ([0008]). As such, a skilled artisan would have been motivated in using the methods of JP’668 in place of the conventional methods taught by US’603 to react TMAH and chlorine gas with a reasonable expectation of success in obtaining TMAOCl with improved yield. Regarding claim 2, JP’668 teaches in [0018] PNG media_image1.png 230 531 media_image1.png Greyscale Thus, a skilled artisan would have been motivated to determine the most optimal feed rate for the reaction of US’603 between TMAH and chlorine gas through routine experimentation and would arrive at the instant claimed volume flow rate of the halogen to a volume flow rate of the organic liquid. It would thus have been prima facie obvious to a skilled artisan before the effective filing date of the instant invention in conducting a method of manufacturing a halogen oxoacid, the method comprising continuously supplying an organic alkaline solution and a halogen from a first end to a second end of a reaction tube so that liquid phase parts and gas phase parts are alternately and repeatedly provided in a transfer passage of the reaction tube, in pseudo-plug flow, to perform gas-liquid mixing of the organic alkaline solution and the halogen at the liquid phase parts and/or gas phase parts; wherein the reaction tube has an axis extending from the first end to the second end of the reaction tube and extends in an axial direction while circling around the axis, is arranged to extend substantially in a horizontal direction, is formed in a spiral shape having a spiral axis coinciding with the axis, circles around the axis two or more times, the inner diameter of the spirally formed circles is 30 mm or more and 3000 mm or less, and contains a fluororesin; and an average inner diameter of the reaction tube is 5 mm or greater in view of the combination of US’603 and JP’668. Response to Arguments The arguments presented are with respect to the new limitation recited in claim 1 and such limitation has been addressed in the above rejection. As such, the claimed invention remains obvious over the combination of US’603 and JP’668. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1-2 and are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-16 of U.S. Patent No. 11,572,533B2 (‘533) in view of Patent number JP2007105668A (JP’668; cited in IDS 01/23/2023 and machine translation cited in PTO-892 08/20/2025); 11,572,331 (‘331) in view of Patent number JP2007105668A (JP’668; cited in IDS 01/23/2023 and machine translation cited in PTO-892 08/20/2025); and 11,390,577 (‘577) in view of Patent number JP2007105668A (JP’668; cited in IDS 01/23/2023 and machine translation cited in PTO-892 08/20/2025). The claims at issue are drawn to a method of manufacturing a halogen oxoacid (quaternary alkylammonium hypochlorite solution in ‘533), the method comprising reacting an organic alkaline solution (quaternary alkylammonium hydroxide solution in ‘533, ‘331 and ‘577) and a halogen. The claims of ‘533, ‘331 and ‘577 fail to recite continuously supplying an organic alkaline solution and a halogen from a first end to a second end of a reaction tube so that liquid phase parts and gas phase parts are alternately and repeatedly provided in a transfer passage of the reaction tube, in pseudo-plug flow, to perform gas-liquid mixing of the organic alkaline solution and the halogen at the liquid phase parts and/or gas phase parts; wherein the reaction tube has an axis extending from the first end to the second end of the reaction tube and extends in an axial direction while circling around the axis, is arranged to extend substantially in a horizontal direction, is formed in a spiral shape having a spiral axis coinciding with the axis, circles around the axis two or more times, the inner diameter of the spirally formed circles is 30 mm or more and 3000 mm or less, and contains a fluororesin; and an average inner diameter of the reaction tube is 5 mm or greater. However, the deficiencies are cured by JP’668. Regarding claim 1, JP’668 teaches a gas-liquid reaction method and an apparatus therefor, and more particularly a method and an apparatus therefor for efficiently carrying out a reaction in a gas-liquid multiphase flow using a micro-tubular reactor having two or more gas inlet ports into a micro-channel. The reference teaches that a gas-liquid reaction method in which a liquid component containing a reaction substrate and a gas component containing a reaction gas are caused to flow through a micro-tubular reactor, and the reaction substrate and the reaction gas are caused to react in the microtubular reactor to obtain a reaction product, characterized in that the equivalent diameter of the inner diameter of the micro-tubular reactor is 5 to 10,000 5 to 10,000 μm (or 0.005-100 mm), and the gas component containing the reaction gas is introduced into the micro-tubular reactor from two or more positions in the flow direction of the micro-tubular reactor ([0009]). The state of the gas-liquid multiphase flow flowing through the micro-tubular reactor in the present invention includes a plug flow in which gas plugs and liquid plugs flow alternately ([0037] and [0054]). JP’668 further teaches in [0056] that the gas-liquid reaction method of the present invention is preferably carried out by using a gas-liquid reaction apparatus having a microtubular reactor and a liquid supply device and a gas supply device upstream of the supply section of the micro-tubular reactor, and by circulating a gas component containing a reactant gas and a liquid component containing a reaction substrate, thus rendering a continuous process. Furthermore, JP’668 teaches that when the length of the reactor is increased in order to increase the residence time, the reactor may be coiled to avoid the apparatus becoming large ([0026]). As such, it is understood that the reaction tube has an axis extending from the first end to the second end of the reaction tube and extends in an axial direction while circling around the axis and the reaction tube is formed in a spiral shape having a spiral axis coinciding with the axis. The first and second microreactors 5 and 6 in JP’668 is arranged to extend substantially in a horizontal direction (the figure) and the first and second microreactors 5 and 6 in JP’668 are made of Teflon ([0064]). The reference does not explicitly teach the newly recited limitation "circles around the axis two or more times, the inner diameter of the spirally formed circles is 30 mm or more and 3000 mm or less", however, there is no criticality of having such feature over JP'668. The use of the reaction tube in both methods of the instant invention and JP'668 results in a plug-flow, and that circling the coiled form of JP'668 around the axis any number of times and any length of the inner diameter of the coiled circles formed in JP'668, including those of the claimed invention, would yield nothing more than the plug flow in which the gas reactant parts and the liquid reactant parts flow alternately, i.e. the same feature observed in the claimed invention. JP’668 teaches that the conventional methods requires a large capacity vessel and industrially, the reactions have been carried out on a large scale bubble columns, packed columns, etc. leading to a confinement reaction or a method using a large-scale reactor, and the reaction rate is limited by the rate of dissolution of the gas from the gas phase to the liquid phase, resulting in a low reaction rate and low productivity ([0002]-[0003]). The reference thus discusses that the use of a micro-tubular reactor is suitable for increasing the dissolution rate of a reaction gas into a liquid phase is effective by improving the efficiency of a gas-liquid reaction ([0008]). Moreover, JP’668 teaches that the volume ratio of the reaction gas to the liquid phase containing the reaction substrates in the micro-tubular reactor can be reduced by introducing the reaction gas from two or more locations in the flow direction (tube length direction) of the micro-tubular reactor, and as a result, the residence time of the reaction substrates in the micro-tubular reactor can be extended, thereby improving the yield and increasing the productivity ([0008]). As such, a skilled artisan would have been motivated in using the methods of JP’668 in place of the methods recited in ‘533, ‘331 or ‘577 with a reasonable expectation of success in obtaining halogen oxoacid with improved yield. Regarding claim 2, JP’668 teaches in [0018] PNG media_image1.png 230 531 media_image1.png Greyscale Thus, a skilled artisan would have been motivated to determine the most optimal feed rate for the reaction of US’603 between TMAH and chlorine gas through routine experimentation and would arrive at the instant claimed volume flow rate of the halogen to a volume flow rate of the organic liquid. It would thus have been prima facie obvious to a skilled artisan before the effective filing date of the instant invention in conducting a method of manufacturing a halogen oxoacid, the method comprising: continuously supplying an organic alkaline solution and a halogen from a first end to a second end of a reaction tube so that liquid phase parts and gas phase parts are alternately and repeatedly provided in a transfer passage of the reaction tube, in pseudo-plug flow, to perform gas-liquid mixing of the organic alkaline solution and the halogen at the liquid phase parts and/or gas phase parts; wherein the reaction tube has an axis extending from the first end to the second end of the reaction tube and extends in an axial direction while circling around the axis, is arranged to extend substantially in a horizontal direction, is formed in a spiral shape having a spiral axis coinciding with the axis, circles around the axis two or more times, the inner diameter of the spirally formed circles is 30 mm or more and 3000 mm or less, and contains a fluororesin; and an average inner diameter of the reaction tube is 5 mm or greater over the combination of the claims of ‘533, ‘331 or ‘577 and the teachings of JP’668. Conclusion Claims 1-2 are rejected and no claims are allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MEDHANIT W BAHTA whose telephone number is (571)270-7658. The examiner can normally be reached Monday-Friday 8am-5pm. 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, Scarlett Goon can be reached at 571-270-5241. 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. /MEDHANIT W BAHTA/Primary Examiner, Art Unit 1692
Read full office action

Prosecution Timeline

Show 3 earlier events
Nov 18, 2025
Applicant Interview (Telephonic)
Dec 19, 2025
Response Filed
Mar 03, 2026
Final Rejection mailed — §103, §DOUBLEPATENT
Jun 03, 2026
Request for Continued Examination
Jun 08, 2026
Response after Non-Final Action
Aug 10, 2026
Applicant Interview (Telephonic)
Aug 10, 2026
Examiner Interview Summary
Aug 17, 2026
Non-Final Rejection mailed — §103, §DOUBLEPATENT (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12735369
Selective Transition Metal Catalyzed Deuterium Incorporation Into Alkyne and Alkene Functionalities
3y 4m to grant Granted Sep 15, 2026
Patent 12735375
PROCESS
3y 6m to grant Granted Sep 15, 2026
Patent 12729174
CONVERTING NATURAL GAS TO DIMETHYL ETHER
3y 8m to grant Granted Sep 08, 2026
Patent 12721800
PHOSPHONATES AND N-HALAMINES COMPOSITIONS FOR TARTAR REMOVAL
3y 2m to grant Granted Sep 01, 2026
Patent 12715882
ADDUCT COMPRISING AT LEAST A METAL SELECTED FROM GOLD, SILVER AND COPPER AND AN ADDUCT OF A CARBON ALLOTROP AND A PYRROLIC COMPOUND
3y 6m to grant Granted Aug 25, 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

3-4
Expected OA Rounds
81%
Grant Probability
99%
With Interview (+28.2%)
2y 1m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 794 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