Prosecution Insights
Last updated: August 06, 2026
Application No. 18/442,438

Water-Soluble Films and Methods of Use

Non-Final OA §102§103§112
Filed
Feb 15, 2024
Priority
Aug 16, 2021 — provisional 63/233,446 +2 more
Examiner
CAI, WENWEN
Art Unit
Tech Center
Assignee
Cmc Group Inc.
OA Round
1 (Non-Final)
60%
Grant Probability
Moderate
1-2
OA Rounds
8m
Est. Remaining
80%
With Interview

Examiner Intelligence

Grants 60% of resolved cases
60%
Career Allowance Rate
519 granted / 870 resolved
At TC average
Strong +20% interview lift
Without
With
+19.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
71 currently pending
Career history
938
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
45.0%
+5.0% vs TC avg
§102
17.2%
-22.8% vs TC avg
§112
28.7%
-11.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 870 resolved cases

Office Action

§102 §103 §112
DETAILED ACTION The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Election/Restrictions Applicant’s election of Group I, claims 1-14 and 20, and species of the film of claim 1, and polypeptide in the reply filed on 7/15/2026 is acknowledged. Because applicant did not distinctly and specifically point out the supposed errors in the restriction requirement, the election has been treated as an election without traverse (MPEP § 818.03(a)). Claims 2, 10-14, 38, 52-54 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention and species, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 7/15/2026. Specification Applicant is reminded of the proper language and format for an abstract of the disclosure. The abstract should be in narrative form and generally limited to a single paragraph on a separate sheet within the range of 50 to 150 words. It is important that the abstract not exceed 150 words in length since the space provided for the abstract on the computer tape used by the printer is limited. The form and legal phraseology often used in patent claims, such as "means" and "said," should be avoided. The abstract should describe the disclosure sufficiently to assist readers in deciding whether there is a need for consulting the full patent text for details. The language should be clear and concise and should not repeat information given in the title. It should avoid using phrases which can be implied, such as, "The disclosure concerns," "The disclosure defined by this invention," "The disclosure describes," etc. The abstract of the disclosure is objected to because it does not should the disclosure sufficiently to assist readers in deciding whether there is a need for consulting the full patent text for details. Claim Rejections - 35 USC § 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. 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, 3-9, 20 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 pre-AIA the applicant regards as the invention. Claim 1 recites “a hydrophilic polymer blend with a polymeric resin weight average molecular weight of from about 20,000 to about 80,000, wherein the hydrophilic polymer blend comprises a polyoxazoline polymer, a polysaccharide or a polypeptide”. What does “a hydrophilic polymer blend” mean? Does it have to be at least two polymers? For polypeptides listed in claim 9, only gelatin is hydrophilic; the rest is either hydrophobic or amphiphilic. Casein, collagen and soy protein have a Mw greater than 80,000. Wheat gluten, zein, whey protein and gelatin do not have a single molecular weight. For purposes of expediting prosecution, the claim is interpreted as “a shelf stable water soluble film comprising a polymer selected from the group consisting of a polyoxazoline polymer, a polysaccharide and a polypeptide; the film has a water content of……” Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1, 3-4, 6-9, 20 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Courchay et al (US 2024/0076587). Courchay teaches a shelf stable water soluble film comprising a caseinate polymer and an anionic polyvinyl alcohol copolymer, the film comprises a residual moisture content of at least about 4%, preferably 5-10% (claims 1, 14, 0020). The caseinate polymer is a mixture of caseinate and casein [0031]. The anionic polyvinyl alcohol copolymer has an average degree of hydrolysis of 75-99% (claim 12). Because Courchay teaches the claimed composition, it is therefore inherent that the composition exhibit claimed property since such a property is evidently dependent upon the nature of the composition used, see MPEP 2112.01. Absent an objective showing to the contrary, the addition of the claimed physical properties to the claim language fails to provide patentable distinction over the prior art. It is noted that in the limitation of “the film at a thickness of about 3 mil”, the thickness does not further limit the film, it is directed to a property of the film when having that thickness. 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, 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. Claim 5 is/are rejected under 35 U.S.C. 103 as being unpatentable over Courchay et al (US 2024/0076587). Courchay teaches the water soluble polymer is 50-95wt% by weight of the film and the weight ratio of caseinate polymer to the anionic polyvinyl alcohol is 10:90 to 90:10 (claims 2-3). Therefore the amount of the anionic polyvinyl alcohol is 5-85.5wt%. Case law holds that in the case where the claimed ranges “overlap or lie inside ranges disclosed by the prior art” a prima facie case of obviousness exists. In re Wertheim, 541 F.2d 257, 191 USPQ 90 (CCPA 1976); In re Woodruff, 919 F.2d 1575, 16 USPQ2d 1934 (Fed. Cir. 1990). Any inquiry concerning this communication or earlier communications from the examiner should be directed to WENWEN CAI whose telephone number is (571)270-3590. The examiner can normally be reached on M-F 9am-6pm. 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, Joseph Del Sole can be reached on (571)272-1130. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /WENWEN CAI/ Primary Examiner, Art Unit 1763
Read full office action

Prosecution Timeline

Feb 15, 2024
Application Filed
Jul 30, 2026
Non-Final Rejection mailed — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12692328
B-STAGEABLE AQUEOUS BINDER COMPOSITIONS
4y 10m to grant Granted Jul 28, 2026
Patent 12655247
TWO COMPONENT COATING COMPOSITIONS
4y 9m to grant Granted Jun 16, 2026
Patent 12630685
MXENE ENHANCED URETHANE FOAM
3y 6m to grant Granted May 19, 2026
Patent 12617941
HEAT-CURABLE RESIN COMPOSITION
2y 12m to grant Granted May 05, 2026
Patent 12611650
ELECTRET AND FILTER USING THE SAME
4y 2m to grant Granted Apr 28, 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

1-2
Expected OA Rounds
60%
Grant Probability
80%
With Interview (+19.8%)
3y 2m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 870 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