Prosecution Insights
Last updated: August 06, 2026
Application No. 18/296,147

ELECTROCHEMICAL GLAZING HAVING ELECTRICALLY CONTROLLABLE OPTICAL AND ENERGY-RELATED PROPERTIES

Final Rejection §102§103§112
Filed
Aug 28, 2023
Priority
Jul 16, 2010 — FR 10/03004 +4 more
Examiner
WEYDEMEYER, ETHAN
Art Unit
1783
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Sage Electrochromics Inc.
OA Round
2 (Final)
44%
Grant Probability
Moderate
3-4
OA Rounds
10m
Est. Remaining
88%
With Interview

Examiner Intelligence

Grants 44% of resolved cases
44%
Career Allowance Rate
165 granted / 375 resolved
-21.0% vs TC avg
Strong +44% interview lift
Without
With
+44.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 9m
Avg Prosecution
41 currently pending
Career history
418
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
54.5%
+14.5% vs TC avg
§102
16.5%
-23.5% vs TC avg
§112
26.0%
-14.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 375 resolved cases

Office Action

§102 §103 §112
Notice of Pre-AIA or AIA Status The present application is being examined under the pre-AIA first to invent provisions. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of pre-AIA 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 – (b) the invention was patented or described in a printed publication in this or a foreign country or in public use or on sale in this country, more than one year prior to the date of application for patent in the United States. Claims 2-7 and 11-16 are rejected under pre-AIA 35 U.S.C. 102(b) as being anticipated by Agrawal et al (US2005/0025980A1). With regards to claim 2, Agrawal discloses an electrochromic glazing (i.e., a glazing unit) comprising a substrate S1 (i.e., a first substrate) and a substrate S2 (i.e., a second substrate), and a multilayer laminate including an electrochromic layer, electrolyte film, and ion storage layer located therebetween (i.e., an electrochemical system disposed between the first and second substrates) (Agrawal: Figs. 3a-3c; para. [0001]-[0006] and [0015]). Agrawal further depicts the inclusion of a transparent conductive layer (i.e., counter-substrate) disposed opposite the multilayer laminate (i.e., electrochemical system) across the first substrate (Agrawal: Figs. 3a-3c). In addition, Agrawal depicts the first substrate set back relative to the transparent conductive layer over an entire circumference of the first substrate, and the second substrate is set back relative to the transparent conductive layer over an entire circumference of the second substrate (Agrawal: Figs. 3a-3c). With regards to claim 3, Agrawal depicts the second substrate is set back relative to the counter-substrate over an entire circumference of the second substrate (Agrawal: Figs. 3a-3c). With regards to claim 4, Agrawal notes that the substrate S1 (i.e., first substrate) may comprise glass (Agrawal: para. [0017]). With regards to claim 5, the glass material of Agrawal (i.e., including the first substrate) may be a soda lime glass (i.e., a soda-lime-silica glass) (Agrawal: para. [0017]). With regards to claim 6, the counter-substrate (i.e., transparent conductive layer) is considered to constitute a flexible layer (i.e., it is noted that the term “flexible” is rather broad, and the present specification does not limit which materials are considered “flexible”). With regards to claim 7, the electrochromic glazing of Agrawal (i.e., the glazing unit according to present claim 2) may be further incorporated into a window with additional layers of glass (i.e., implies the existence of a glazing sheet disposed opposite the electrochemical system across the substrate (Agrawal: para. [0008]). With regards to claim 11, since the first substrate is located within the window of present claim 7, the first substrate is considered set back relative to the glazing sheet over the entire circumference of the first substrate (see above discussion). With regards to claim 12, since the second substrate is located within the window of present claim 7, the second substrate is considered set back relative to the glazing sheet over the entire circumference of the second substrate (see above discussion). With regards to claim 13, the electrochemical system comprises an electrochromic system (i.e., an optical-related property that is electrically controllable) (see above discussion). With regards to claim 14, the electrochemical system comprises an electrolyte film (see above discussion). With regards to claim 15, since multiple additional glass layers are used, at least one of such layers may be considered an “interlayer” (see above discussion). With regards to claim 16, Agrawal discloses an electrochromic glazing (i.e., a glazing unit) comprising a substrate S1 (i.e., a first substrate) and a substrate S2 (i.e., a second substrate), and a multilayer laminate including an electrochromic layer, electrolyte film, and ion storage layer located therebetween (i.e., an electrochemical system disposed between the first and second substrates) (see above discussion). Agrawal further depicts the inclusion of a transparent conductive layer (i.e., counter-substrate) disposed opposite the multilayer laminate (i.e., electrochemical system) across the first substrate (see above discussion). In addition, Agrawal depicts the first substrate set back relative to the transparent conductive layer over an entire circumference of the first substrate, and the second substrate as set back relative to the transparent conductive layer over an entire circumference of the second substrate (see above discussion). Claim Rejections - 35 USC § 103 The following is a quotation of pre-AIA 35 U.S.C. 103(a) 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, 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 negated by the manner in which the invention was made. Claims 8-10 are rejected under pre-AIA 35 U.S.C. 103(a) as being unpatentable over Agrawal as applied to claim 7 above, and in further view of Poll et al (US2002/0075552A1). With regards to claim 8, Agrawal discloses a glazing unit as applied to claim 1 above (see above discussion). Agrawal does not clearly describe its glazing sheet as spaced from its second substrate. Poll is directed to an electrochromic window depicted as comprising a second transparent element 30 (i.e., a second substrate) spaced apart from a second transparent substrate 14 made of tempered glass (i.e., a glazing sheet) (Poll: Fig. 1A: para. [0040]-[0041]). In the second chamber 26 (i.e., the spacing between the second substrate and glazing), additional gas may be present in order to provide a reduced thermal conductivity, thereby allowing thermal insulation to an adjacent building (Poll: para. [0042]). Agrawal and Poll are analogous art in that they are related to the same field of endeavor of electrochromic windows. A person of ordinary skill in the art would have found it obvious to have spaced the glazing sheet of Agrawal from the second substrate of Agrawal, in order to enable backfilling of an additional gas, thereby providing insulation to an adjacent building (Poll: Fig. 1A; para. [0040]-[0041]). With regards to claim 9, the space between the glazing sheet and substrate comprises a gas (see above discussion). With regards to claim 10, a person of ordinary skill in the art would have found it obvious to have selected a chemically strengthened (i.e., toughened) glass for the glazing sheet, in order to improve the strength of the formed window (Poll: para. [0040]). Response to Arguments Applicant’s arguments with respect to the grounds of rejection under 35 U.S.C. 112(b) have been fully considered and they are found persuasive. Applicant has amended the present claims to provide antecedent basis (i.e., by amending the substrate to instead reference “the first substrate”). Therefore, the grounds of rejection under 35 U.S.C. 112(b) has been withdrawn. The remainder of Applicant’s arguments have been fully considered but they are not found persuasive. On pages 5-6, then repeated on pages 7-8, Applicant discusses the formation process of Agrawal, and then concludes that Agrawal is silent as to the first substrate being set back to the counter-substrate over an entire circumference of the first substrate, and the counter-substrate disposed opposite the electrochemical system across the first substrate. Applicant argues that Agrawal instead discloses a process in which other components of the electrochromic device are present. Applicant’s arguments are not found persuasive as they are not commensurate in scope with the claims. As best understood, the first substrate of Agrawal is set back to its counter substrate, as the first substrate and counter substrate are spaced from each other. It is possible Applicant believes an additional structural distinction is present, but the arguments do not make such a distinction clear. That the process of Agrawal is different from the process of forming the claimed invention does not necessarily imply a particular structural difference (nor is any structural difference recited in the claims). In addition, the claims do not preclude the existence of other electrical components between the first substrate and counter substrate. Applicant additionally argues that Agrawal does not disclose a third substrate, but this argument is not found persuasive as the term “substrate” is rather broad. The transparent conductive layer of Agrawal is considered to constitute a counter-substrate (i.e., third substrate). It is possible Applicant believes that the counter-substrate must be a glazing sheet, but it is noted that the claims do not specify the material of the counter-substrate. On pages 6-7, then repeated on pages 8-9, Applicant argues that one of ordinary skill would have understood that the substrates of Agrawal have the same dimension, and therefore, Agrawal fails to disclose a glazing unit in which the substrate is set back relative to the counter substrate. Applicant further points to process steps disclosed in Agrawal in support. These arguments are not found persuasive as they are not commensurate in scope with the claims. That the claimed first and second substrates are set back relative to the counter substrate does not imply or require a specific substrate size. The claimed phrase “set back relative to” relates to a positional requirement, and not a substrate area or size requirement. It is not clear how selection of substrates having the same size results in a structure which fails to meet the claims, as argued by Applicant. On pages 8-9, Applicant argues that Poll is silent as to the first substrate being set back relative to the counter substrate. This argument is not found persuasive as Poll was not cited to teach this structure. Poll was instead cited to teach the glazing sheet as spaced from the second substrate. Agrawal separately discloses a first substrate set back relative to a counter substrate in the claimed manner. Conclusion 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 nonprovisional extension fee (37 CFR 1.17(a)) 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. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ETHAN WEYDEMEYER whose telephone number is (571)270-1907. The examiner can normally be reached Monday - Friday 8:30 - 5:00. 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, Maria V. Ewald can be reached at (571) 272-8519. 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. /E.W./ Examiner, Art Unit 1783 /MARIA V EWALD/Supervisory Patent Examiner, Art Unit 1783
Read full office action

Prosecution Timeline

Aug 28, 2023
Application Filed
Feb 23, 2026
Non-Final Rejection mailed — §102, §103, §112
May 22, 2026
Response Filed
Jun 25, 2026
Final Rejection mailed — §102, §103, §112 (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

3-4
Expected OA Rounds
44%
Grant Probability
88%
With Interview (+44.3%)
3y 9m (~10m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 375 resolved cases by this examiner. Grant probability derived from career allowance rate.

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