Prosecution Insights
Last updated: July 17, 2026
Application No. 17/473,456

WOOD STAINS AND PENETRATION PRIMERS COMPRISING LOW VOC LEVEL AQUEOUS DISPERSIONS

Non-Final OA §103
Filed
Sep 13, 2021
Examiner
CAI, WENWEN
Art Unit
1763
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Celanese International Corporation
OA Round
7 (Non-Final)
60%
Grant Probability
Moderate
7-8
OA Rounds
0m
Est. Remaining
80%
With Interview

Examiner Intelligence

Grants 60% of resolved cases
60%
Career Allowance Rate
519 granted / 867 resolved
-5.1% vs TC avg
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
935
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
73.2%
+33.2% vs TC avg
§102
7.3%
-32.7% vs TC avg
§112
8.5%
-31.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 867 resolved cases

Office Action

§103
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 . 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 12/29/2025 has been entered. Response to Amendment The amendment of claim 1 is supported by the specification. Any rejections and/or objections made in the previous Office action and not repeated below are hereby withdrawn. The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claim Rejections - 35 USC § 103 Claim 1-15, 17-22 is/are rejected under 35 U.S.C. 103 as being unpatentable over Tsukiyama (JP 2006117812, hereafter Tsukiyama) in view of Tsukiyama et al (JP2006070149, hereafter ‘149). In setting forth this rejection a machine translation of JP2006070149 has been relied upon and all citations to paragraph numbers in the discussion below are with respect to the machine translation. Claims 1-3, 5-11, 13-15, 19-21: Tsukiyama teaches a composition comprising an aqueous polymer dispersion and sodium silicate (example 2). The polymer is formed by free radical polymerization of a monomer mixture comprising 1.1wt% of p-styrene sulfonic acid sodium, 1.1 wt% of a reactive surfactant PNG media_image1.png 181 290 media_image1.png Greyscale , 1.8 wt% of methacrylic acid, styrene, and 2-ethylhexyl acrylate. The composition has a solid content of 15.2wt% and a pH of 11. The sulfonate monomer can be sodium p-styrene sulfonate or t-butyl acrylamido sulfonic acid (i.e. 2-acrylamido-2-methylpropanesulfonic acid) (0020, 0045). In example 2, the content of vinyl copolymer is 3.76wt%, the content of silicate is 11.25 wt%, the ratio of vinyl copolymer to silicate is 0.334. Tsukiyama teaches the weight ratio of vinyl copolymer to silicate is 1/10 to 10/1. Therefore, one skilled in the art would recognize there are embodiments comprising silicate in an amount overlapping the claimed range, for example when the content of vinyl copolymer is 3.76 wt%, the content of silicate can be in a range of 0.376-37.6wt%. The composition does not contain organic solvents. Tsukiyama further teaches the resin composition is for inorganic boards and may contain known additives such as pigment [0065]. Tsukiyama does not teach the amount of the pigment. However, ‘149 discloses a similar water-dispersible resin composition for inorganic board, which can be used as a clear film or a paint by blending with additives such as pigments and teaches the color pigment are used in an amount of 0.01-50 parts by weight per 100 parts by weight of copolymer resin emulsion [0066-0069]. Considering the exemplified solid content of copolymer resin emulsion and the density of coloring pigments, the pigment volume concentration overlaps the claimed range. Therefore, it would have been obvious to one of ordinary skill in the art at the time the invention was made to include pigment in an amount like claimed because it is recognized in the art such an amount of pigment is suitable for a coating for inorganic boards. Alternatively, it would have been obvious to one of ordinary skill in the art at the time the invention was made to adjust the amount of the pigments through routine experimentation in the composition, because the pigment volume concentration is a result effective variable if the concentration is too low the concealing property are insufficient, if the concentration is too high, the film will crack. Case law holds that "discovery of an optimum value of a result effective variable in a known process is ordinarily within the skill of the art." In re Antonie, 559 F.2d 618, 195 USPQ 6 (CCPA 1977). In re Boesch, 617 F.2d 272, 205 USPQ 215 (CCPA 1980). Claim 4, 22: Tsukiyama teaches the polymer has a particle size of 30-800nm (0052). 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). Claim 12: the carboxylic acid can be acrylic acid, or methacrylic acid [0020]. It is well settled that it is prima facie obvious to combine two ingredients, each of which is targeted by the prior art to be useful for the same purpose. In re Lindner 457 F,2d 506,509, 173 USPQ 356, 359 (CCPA 1972). Claim 17: the polymer has a Tg of -30 to 60°C [0051]. Claim 18: Tsukiyama is silent with respect to the claimed property of the composition. However, the teachings from Tsukiyama have rendered obvious the instantly claimed ingredients and amounts thereof. Therefore, it is reasonable that one of ordinary skill in the art would expect the claimed physical properties to naturally arise. Response to Arguments Applicant's arguments filed 12/29/2025 have been fully considered but they are not persuasive. In response to applicant's argument that one skilled in the art would not look to Tsukiyama 149 because it is directed to such a specific type of coating made to withstand very high temperatures, the argument is not persuasive because 1) the test for obviousness is not whether the features of a secondary reference may be bodily incorporated into the structure of the primary reference; nor is it that the claimed invention must be expressly suggested in any one or all of the references. Rather, the test is what the combined teachings of the references would have suggested to those of ordinary skill in the art. See In re Keller, 642 F.2d 413, 208 USPQ 871 (CCPA 1981). 2) the content of the pigment does not rely on if the coating can withstand high temperature or not. In response to applicant's argument regarding unsupported statement, it is noted that teaching, suggestion, or motivation can be found either in the references themselves or in the knowledge generally available to one of ordinary skill in the art. See In re Fine, 837 F.2d 1071, 5 USPQ2d 1596 (Fed. Cir. 1988), In re Jones, 958 F.2d 347, 21 USPQ2d 1941 (Fed. Cir. 1992), and KSR International Co. v. Teleflex, Inc., 550 U.S. 398, 82 USPQ2d 1385 (2007). 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

Show 13 earlier events
Nov 07, 2024
Request for Continued Examination
Nov 08, 2024
Response after Non-Final Action
Mar 14, 2025
Non-Final Rejection mailed — §103
Aug 13, 2025
Response Filed
Aug 27, 2025
Final Rejection mailed — §103
Dec 29, 2025
Request for Continued Examination
Jan 01, 2026
Response after Non-Final Action
Jun 03, 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

7-8
Expected OA Rounds
60%
Grant Probability
80%
With Interview (+19.8%)
3y 2m (~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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