Prosecution Insights
Last updated: October 25, 2026
Application No. 19/165,498

LOW EMISSION EXPANSION JOINT ASSEMBLY

Non-Final OA §103
Filed
Sep 15, 2025
Priority
Mar 16, 2023 — EU 23162242.4 +1 more
Examiner
HEWITT, JAMES M
Art Unit
3679
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Eagleburgmann Germany GmbH & Co. Kg
OA Round
2 (Non-Final)
70%
Grant Probability
Favorable
2-3
OA Rounds
2y 1m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
616 granted / 884 resolved
+17.7% vs TC avg
Strong +45% interview lift
Without
With
+45.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
17 currently pending
Career history
908
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
39.6%
-0.4% vs TC avg
§102
29.8%
-10.2% vs TC avg
§112
24.7%
-15.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 884 resolved cases

Office Action

§103
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 . Response to Arguments Applicant’s arguments, see pages 5-8, filed 09/15/26, with respect to the 102 rejection by Bao have been fully considered and are persuasive. The 102 rejection has been withdrawn. However, note the following 103 rejections. 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. Claim(s) 1-2, 5-7 and 11-15 is/are rejected under 35 U.S.C. 103 as being unpatentable over Bao (CN 2101812 U) in view of Elliott (US 6,027,147). As to claim 1, Bao discloses a joint assembly adapted for flexibly connecting first and second duct ends, comprising an expansion joint layer (1/2/3), a fastening assembly (5 at each end of the assembly shown in Fig. 1) adapted for attachment at the first duct end and at the second duct end, wherein the fastening assembly at the first duct end fixes a first end of the expansion joint layer between a first face and a second face, wherein the fastening assembly at the second duct end fixes a second end of the expansion joint layer between a first face and a second face (as shown in Fig. 1, the fastener 5 extends from one face to another face), and wherein a cuff (4) encloses at least one end of the expansion joint layer between the first face and the second face (Fig. 1), so that the cuff overlays the expansion joint layer radially inwards, radially outwards and at the axial end (Fig. 1). Bao fails to teach a metal foil cuff. However, Elliott teaches a similar expansion joint assembly, wherein the sealing member includes cuffs (30) that are fabric with stainless steel threads (see col. 3, ll. 17-19 and col. 5, ll. 16-20). Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to modify Bao such that the cuff is a metal foil composite material, as taught by Elliott, with a reasonable expectation of success, in order to provide a more durable cuff. As to claim 2, Bao/Elliott discloses an Expansion joint assembly according to claim 1, wherein the expansion joint layer comprises multiple layers, including an outside layer, an insulation layer and an inner layer. Refer to paragraphs [0008] and [0009] of the Bao translation. As to claim 5, Bao/Elliott discloses an Expansion joint assembly according to claim 1, wherein the first face and the second face of the fastening assembly are adapted to be tighten using screws (as by the fastener holes 5, see Bao) As to claim 6, Bao/Elliott discloses an Expansion joint assembly according to claim 1, wherein the first face and the second face of the fastening assembly are adapted to be tighten using clamps. Clamps can be used with the fastener holes (5, Bao). As to claim 7, Bao/Elliott discloses an Expansion joint assembly according to claim 1, wherein the metal foil is a composite material. Refer to Elliott, see col. 3, ll. 17-19 and col. 5, ll. 16-20. As to claim 11, Bao/Elliott discloses an Expansion joint assembly according to claim 1, except for expressly teaching that the metal foil has a thickness between 0,025 mm and 0,05 mm. However, it is known in the art that altering/varying the relative sizes of a structure can affect the weight, sealing ability, strength, flexibility, etc. of the structure. Accordingly, it would have been obvious to one having ordinary skill in the art at the time the invention was made to modify Bao/Elliott such that the metal foil has a thickness between 0,025 mm and 0,05 mm, for the purpose of one or more of: controlling the weight of the structure; ensuring sufficient strength and/or flexibility; providing a structure which would have allowed sufficient sealing and engagement to occur when the joint is properly mated; to aid in the machining of the structure; and to have a structural arrangement which would have been obvious to try, since it has been held that where the general conditions of a claim are disclosed in the prior art, discovering the optimum or workable ranges involves only routine skill in the art. In re Aller, 105 USPQ 233. Alternatively, it would have been obvious matter of design choice to modify Bao/Elliott such that the metal foil has a thickness between 0,025 mm and 0,05 mm, for the purpose of one or more of: controlling the weight of the structure; ensuring sufficient strength and/or flexibility; providing a structure which would have allowed sufficient sealing and engagement to occur when the joint is properly mated; to aid in the machining of the structure; and to have a structural arrangement which would have been obvious to try, since such a modification would have involved a mere change in the size and/or proportion of a component. A change in size and/or proportion is generally recognized as being within the level of ordinary skill in the art. In re Rose, 105 USPQ 237, (CCPA 1955) and/or Gardener v. TEC Systems, Inc., 725 F.2d 1338, 220 USPQ 777 (Fed. Cir. 1984), cert. denied, 469 U.S. 830, 225 USPQ 232 (1984). As to claim 12, Bao/Elliott discloses an Expansion joint assembly according to claim 1, except that the metal foil is made of stainless steel. Refer to Elliott, wherein the metal foils of stainless steel are particularly advantageous at higher temperatures (higher than 300-400°). As to claim 13, Bao/Elliott discloses an Expansion joint assembly according to claim 1, except for expressly teaching that a mean roughness value RA of the metal foil is below 0,1 μm. However, it is known in the art that altering/varying the relative sizes of a structure can affect the weight, sealing ability, strength, flexibility, etc. of the structure. Accordingly, it would have been obvious to one having ordinary skill in the art at the time the invention was made to modify Bao/Elliott such that a mean roughness value RA of the metal foil is below 0,1 μm, for the purpose of one or more of: controlling the weight of the structure; ensuring sufficient strength and/or flexibility; providing a structure which would have allowed sufficient sealing and engagement to occur when the joint is properly mated; to aid in the machining of the structure; and to have a structural arrangement which would have been obvious to try, since it has been held that where the general conditions of a claim are disclosed in the prior art, discovering the optimum or workable ranges involves only routine skill in the art. In re Aller, 105 USPQ 233. Alternatively, it would have been obvious matter of design choice to modify Bao such that a mean roughness value RA of the metal foil is below 0,1 μm, for the purpose of one or more of: controlling the weight of the structure; ensuring sufficient strength and/or flexibility; providing a structure which would have allowed sufficient sealing and engagement to occur when the joint is properly mated; to aid in the machining of the structure; and to have a structural arrangement which would have been obvious to try, since such a modification would have involved a mere change in the size and/or proportion of a component. A change is size and/or proportion is generally recognized as being within the level of ordinary skill in the art. In re Rose, 105 USPQ 237, (CCPA 1955) and/or Gardener v. TEC Systems, Inc., 725 F.2d 1338, 220 USPQ 777 (Fed. Cir. 1984), cert. denied, 469 U.S. 830, 225 USPQ 232 (1984). As to claim 14, Bao/Elliott discloses an Expansion joint assembly according to claim 1, wherein the expansion joint assembly is adapted for operation temperatures up to 550 °C. Refer to paragraph [0005] of the Bao translation. As to claim 15, Bao/Elliott discloses an Expansion joint assembly according to claim 1, wherein the metal foil is a metal foil laminated to a fibre fabric. See Elliott, col. 3, ll. 17-19 and col. 5, ll. 16-20. Claim(s) 3-4 is/are rejected under 35 U.S.C. 103 as being unpatentable over Bao in view of Elliott, and further in view of Van Tine et al (US 3,460,856). As to claim 3, Bao/Elliott discloses an Expansion joint assembly according to claim 2, except that the insulation layer does not extend to the first end and the second end of the expansion joint layer. However, Van Tine et al teaches a similar expansion joint comprising a sleeve that is fastened at each end to a conduit by a fastening assembly. The sleeve includes a plurality of layers, including insulating layers (33, 34). As shown in Figs. 1 and 2, the layers do not extend into the fastening assembly. As explained in col. 3, ll. 30-33, where considerable flexing of the sleeve is anticipated, cushioning material (48, 50) is also provided to deter cutting of the cover sleeve (44) by a flange (46) or clamp bar (52). Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to modify Bao/Elliott such that the insulation layer does not extend to the first end and the second end of the expansion joint layer, as taught by Van Tine et al, with a reasonable expectation of success, in order to protect the insulation layer during considerable flexing of the joint assembly. As to claim 4, Bao/Elliott/Van Tine et al discloses an Expansion joint assembly according to claim 3, wherein a fibre material (48, 50) is placed between the first face and the second face of the fastening assembly and connected to the insulation layer. Claim(s) 8-9 is/are rejected under 35 U.S.C. 103 as being unpatentable over Bao in view of Elliott, and further in view of Broyles (US 5,358,284). As to claim 8, Bao/Elliott discloses an Expansion joint assembly according to claim 1, except that the expansion joint assembly comprises a seal between the first face of the fastening assembly and the metal foil and/or a seal between the second face of the fastening assembly and the metal foil, and As to claim 9, Bao/Elliott discloses an Expansion joint assembly according to claim 8, except that the seal is a tape seal. However, Broyles teaches a similar expansion joint assembly wherein gasket strips (40, 42) are used to seal between the first and second faces of the fastening assembly. Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to modify Bao/Elliott such that the expansion joint assembly comprises a seal between the first face of the fastening assembly and the metal foil and/or a seal between the second face of the fastening assembly and the metal foil, and, the seal is a tape seal (strip seal), as taught by Broyles, with a reasonable expectation of success, in order to properly seal the joints at the fastening assembly. Claim(s) 10 is/are rejected under 35 U.S.C. 103 as being unpatentable over Bao in view of Elliott, and further in view of McNeela et al (GB 2299636 A). As to claim 10, Bao/Elliott discloses an Expansion joint assembly according to claim 1, except that an end of the metal foil extends from the fastening assembly axially (X - X) inwards, away from the fastening assembly. However, McNeela et al teaches a similar expansion joint assembly having a cuff (20) that extends from the fastening assembly axially inwards, away from the fastening assembly, as shown in Fig. 1. Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to modify Bao/Elliott such that the end of the metal foil extends from the fastening assembly axially (X - X) inwards, away from the fastening assembly, as taught by McNeela et al, with a reasonable expectation of success, in order to better protect the insulation layer. Examiner’s Note: The italicized portions in the foregoing claims are functional recitations. These clauses, as well as other statements of intended use do not serve to patently distinguish the claimed structure over that of the reference(s), as long as the structure of the cited reference(s) is capable of performing the intended use. See MPEP 2111-2115. See also MPEP 2114, which states: A claim containing a "recitation with respect to the manner in which a claimed apparatus is intended to be employed does not differentiate the claimed apparatus from a prior art apparatus" if the prior art apparatus teaches all the structural limitations of the claim. Ex parte Masham, 2 USPQ 2d 1647; Claims directed to apparatus must be distinguished from the prior art in terms of structure rather than function. In re Danly, 263 F.2d 844, 847, 120 USPQ 528, 531; and [A]pparatus claims cover what a device is, not what a device does." Hewlett- Packard Co. v. Bausch & Lomb Inc., 15 USPQ2d 1525,1528. Any one of the systems in the cited reference(s) is capable of being used in the same manner and for the intended or desired use as the claimed invention. Note that it is sufficient to show that said capability exists, which is the case for the cited reference(s). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to James M Hewitt II whose telephone number is (571)272-7084. The examiner can normally be reached M-F 730am-930pm (MST), mid-day flex. 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, Matthew Troutman can be reached at 571-270-3654. 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. James M. Hewitt II Primary Examiner Art Unit 3679 /JAMES M HEWITT II/ Primary Examiner, Art Unit 3679
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Prosecution Timeline

Sep 15, 2025
Application Filed
Jun 15, 2026
Non-Final Rejection mailed — §103
Sep 15, 2026
Response Filed
Oct 14, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
70%
Grant Probability
99%
With Interview (+45.4%)
3y 2m (~2y 1m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 884 resolved cases by this examiner. Grant probability derived from career allowance rate.

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