Prosecution Insights
Last updated: April 19, 2026
Application No. 18/261,166

INVERT EMULSION HAVING DOUBLE PARTICLE SIZE DISTRIBUTION, PREPARATION METHOD THEREFOR AND USE THEREOF

Non-Final OA §101§102§112
Filed
Jul 12, 2023
Examiner
ROELOFSE, CHRISTIAAN
Art Unit
1762
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Jiangsu Feymer Technology Co. Ltd.
OA Round
1 (Non-Final)
50%
Grant Probability
Moderate
1-2
OA Rounds
2y 10m
To Grant
99%
With Interview

Examiner Intelligence

Grants 50% of resolved cases
50%
Career Allow Rate
5 granted / 10 resolved
-15.0% vs TC avg
Strong +56% interview lift
Without
With
+55.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
34 currently pending
Career history
44
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
53.3%
+13.3% vs TC avg
§102
12.7%
-27.3% vs TC avg
§112
21.2%
-18.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 10 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 . Claim Rejections – 35 U.S.C. § 101/112 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. 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. Claims 10, 14 & 15 are rejected under 35 U.S.C. § 101 as the claims are directed to non-statutory subject matter. Claims 10, 14 & 15 do not fall within at least one of the four categories of patent eligible subject matter because the claims are directed as “use” claims that do not purport to claim a process, machine, manufacture or composition of matter. Therefore, claims 10, 14 & 15 fail to comply with 35 U.S.C § 101. Claims 10, 14 & 15 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. Claims 10, 14 & 15 are further rejected under 35 U.S.C. § 112(b) for attempting to claim a use without any active, positive steps delimiting how the use is actually practiced. See MPEP § 2173.05(q). Claim Rejections – 35 U.S.C. § 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. Claims 2 – 15 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. Regarding claims 2, 4 & 11, when further limiting the preparation method for the invert emulsion, claims 2, 4 & 11 all recite the limitation of ‘…preparing in one step…” (p. 3, Claim 2, line 3; Claim 4, line 2; & p. 5, Claim 11, line 2). However, the contents of claims 2, 4 & 11 seem to indicate more than one step is necessary in the invention. Furthermore, the specification does not elaborate or define ‘preparing in one step’ or ‘one step’ and instead seems to contradict what is conventionally meant by ‘one step’ by detailing a Step 1 (p. 12, lines 1 – 11) and a Step 2 (p. 14, line 22 – p. 15, line 10). Additionally, ‘one step’ seems to contradict the ‘three-stage polymerization reaction’, it is unclear what a ‘step’ is intended to encompass. Regarding claim 2, claim 2 is further rejected for failing to clearly detail what steps or actions are required to meet the limitation of ‘controlling an emulsifier system and an emulsification means’, and the specification does not provide any further clarification. Additionally, claim 2 further fails to clearly detail the difference between the ‘emulsifier system’ and the ‘emulsification means’. The specification fails to elaborate or identify the difference between said emulsifier system and said emulsification means. Further, the term ‘means’ coupled with functional language & not modified with sufficient structure invokes 35 U.S.C. § 112(f). The specification fails to disclose any structure corresponding to the claimed ‘emulsification means’ for performing the recited function. Therefore, one of ordinary skill in the art would be unable to determine the full metes and bounds of the claim. Regarding claims 3 – 15, claims 3 – 15 all depend from claim 2, directly or indirectly, and similarly inherit the indefiniteness of claim 2. Therefore, claims 3 – 15 fail to comply with 35 U.S.C. § 112(b). In view of the rejections of claims 2 – 15 under 35 U.S.C. § 112, a rejection of claims 2 – 15 on the merits would require substantial speculation in view of the confusion and uncertainty arising from the outstanding issues identified above. Prior art rejections should not be based on considerable speculation or assumptions. See MPEP § 2173.06. Therefore, claims 2 – 15 have not been evaluated for patentability under 35 U.S.C. § 102 or § 103. Claim Rejections – 35 U.S.C. § 102 Claim 1 is rejected under 35 U.S.C. § 102(a)(2) as being anticipated by Cicchiello et al. (US 5,883,181 A). Regarding claim 1, Cicchiello teaches inverse emulsions comprising at least two particle size distributions and methods of producing said inverse emulsions (col. 1, lines 41-45). Cicchiello employs the use of two emulsions (a microemulsion & a macroemulsion), wherein the microemulsion has a particle size distribution of most preferably less than 1,000 Angstroms (i.e., 100 nm) and the other emulsion has a particle size distribution of most preferably at least 2,000 Angstroms (i.e., 200 nm) greater than those in the microemulsion (col. 8, lines 34-57). Thus, Cicchiello teaches the two particle size distributions arise from the combination of an emulsion having a particle size distribution of 100 nm or less and an emulsion having a particle size distribution of 300 nm or greater. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to CHRISTIAAN ROELOFSE whose telephone number is (571)272-2825. The examiner can normally be reached Monday-Friday 8:00-4:00 EST. 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, Robert Jones can be reached at (571)270-7733. 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. /CHRISTIAAN ROELOFSE/Examiner, Art Unit 1762 /ROBERT S JONES JR/Supervisory Patent Examiner, Art Unit 1762
Read full office action

Prosecution Timeline

Jul 12, 2023
Application Filed
Feb 17, 2026
Non-Final Rejection — §101, §102, §112 (current)

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Study what changed to get past this examiner. Based on 3 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
50%
Grant Probability
99%
With Interview (+55.6%)
2y 10m
Median Time to Grant
Low
PTA Risk
Based on 10 resolved cases by this examiner. Grant probability derived from career allow rate.

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