Prosecution Insights
Last updated: April 19, 2026
Application No. 18/385,743

INJECTION MOLDING APPARATUS WITH EJECTION MECHANISM

Final Rejection §102§103§112
Filed
Oct 31, 2023
Examiner
MELENDEZ, ARMAND
Art Unit
1759
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Shenzhen Fulian Fugui Precision Industry Co. Ltd.
OA Round
2 (Final)
47%
Grant Probability
Moderate
3-4
OA Rounds
3y 4m
To Grant
89%
With Interview

Examiner Intelligence

Grants 47% of resolved cases
47%
Career Allow Rate
163 granted / 350 resolved
-18.4% vs TC avg
Strong +43% interview lift
Without
With
+42.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
44 currently pending
Career history
394
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
53.4%
+13.4% vs TC avg
§102
15.3%
-24.7% vs TC avg
§112
19.9%
-20.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 350 resolved cases

Office Action

§102 §103 §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 . Response to Arguments Applicant's arguments filed 12/29/25 have been fully considered but they are not persuasive. Applicant argues that Wu has the drive device move the main ejection assembly and does not teach that the ejection assembly is moved by the central ejection assembly. However, as the spring goes from an uncompressed state in Fig 2 to a fully compressed state in Fig 3, the force of the drive device would be transferred via the central ejection assembly through the spring to the main ejection assembly’s restriction surface. Drawings The drawings are objected to under 37 CFR 1.83(a). The drawings must show every feature of the invention specified in the claims. Claim 2 recites “the drive device is separated from the main ejection assembly in response to the central ejection assembly lifting the main ejection assembly.” In other words, the drive device is in contact with the main ejection assembly and then the central ejection assembly separates the drive device and the main ejection assembly. However, the drive device (91-93) is never in contact with the main ejection assembly (81), see Figs 1-3 of instant application. Therefore, this feature must be shown or the feature(s) canceled from the claim(s). No new matter should be entered. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claim 2 is rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Claim 2 recites “the drive device is separated from the main ejection assembly in response to the central ejection assembly lifting the main ejection assembly.” In other words, the drive device is in contact with the main ejection assembly and then the central ejection assembly separates the drive device and the main ejection assembly. However, the drive device (91-93) is never in contact with the main ejection assembly (81), see Figs 1-3 of instant application. The examiner was unable to locate anywhere within the specification this feature is described. For purposes of examination, the examiner has interpreted this claim as requiring that the pressing surface of the drive device does not contact the main ejection assembly. 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, 7, 12 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Wu (KR 101600500). As to claim 1, Wu teaches an injection molding apparatus, comprising: a first mold module (bottom mold);a second mold module (top mold), disposed on the first mold module, wherein when the second mold module contacts the first mold module, an injection chamber (sprue channel segment approximate to 14 and 16) and a product chamber (12, 242, 142) are formed between the first mold module and the second mold module; an ejection mechanism, comprising: a main ejection assembly (160); a main ejection rod (340) mounted to the main ejection assembly, and passing through the first mold module; a central ejection assembly (310, 312, 332, 320, 330) disposed in the main ejection assembly; and a central ejection rod (310, 330) mounted to the central ejection assembly, and passing through the first mold module; and a drive device (300) configured to move the central ejection assembly, wherein after plastic in the injection chamber and the product chamber are cooled, a plastic product and an injection part (the sprue product 16, 14) connected to the plastic product are formed, and when the second mold module is separated from the first mold module, the drive device lifts the central ejection assembly to a predetermined position to separate the injection part from the plastic product by the central ejection rod [Fig 3], and after the drive device lifts the central ejection assembly to the predetermined position, the central ejection assembly lifts the main ejection assembly to remove the injection part from the first mold module by the central ejection rod, and to remove the plastic product from the first mold module by the main ejection rod [Fig 3]. Wu teaches the main ejection assembly (160 and the top plate) comprises a bottom surface (the top plate above 160), a first restriction hole formed on the bottom surface (the same size hole of 160 and its top plate), and a second restriction hole (smaller hole occupied by 330), the central ejection assembly (310, 312, 332, 320, 330) is movably disposed in the first restriction hole and the second restriction hole, and the central ejection assembly comprising a lifting portion (312) movably in the first restriction hole, and after the drive device lifts the central ejection assembly to the predetermined position, the lifting portion pushes a restriction surface (indirectly via the spring 320) so that the central ejection assembly lifts the main ejection assembly (the 2 plates are bolted together so continued pressing would lift the entire assembly) [Fig 3]. The lifting being in response to the product chamber being below a preset temperature is just an intended use of the apparatus, which Wu would be structurally capable of performing. The manner of operating a device does not differentiate an apparatus claim from the prior art, see MPEP 2114 II. As to claim 3, Wu teaches a base comprising a receiving space (110, 120), wherein the ejection mechanism is disposed in the receiving space; a first mold (140) disposed on the base, and comprising a first receiving groove (the gap in 140), wherein the first mold module is disposed in the first receiving groove [Fig 3]; and a second mold disposed on the first mold, and comprising a second receiving groove the gap within (240), wherein the second mold module is disposed in the second receiving groove [Fig 2]. As to claim 4, Wu teaches the base further comprises a position groove that is in communication with the receiving space, the drive device comprises a pushing block (310) connected to the central ejection assembly, and when the ejection mechanism is at an initial position, the pushing block is in the position groove (112 as its bottom end appears to overlap in the entrance to 11) [Fig 2], and when the ejection mechanism is at the predetermined position, the pushing block protrudes over the position groove [Fig 3]. As to claim 6, Wu teaches the main ejection assembly comprises: a first ejection plate (160); and a second ejection plate (plate atop 160) detachably affixed (via the unmarked bolt) to the first ejection plate, and movably in a vertical direction in the receiving space, wherein the main ejection rod (340) passes through the second ejection plate, and the main ejection rod is affixed to the first ejection plate by the second ejection plate [Fig 2, 3]. As to claim 7, Wu teaches the central ejection assembly comprises: a first ejection block (312); a second ejection block (320) detachably affixed to the first ejection block (332), and movably in a vertical direction in the receiving space; and a lifting portion (side surface of 312) disposed on a side wall of the first ejection block, wherein the central ejection rod (330, 320) passes through the second ejection block, and the central ejection rod is affixed to the first ejection block by the second ejection block, and after the drive device lifts the central ejection assembly to the predetermined position, the lifting portion lifts the main ejection assembly [Fig 3]. As to claim 12, Wu teaches an injection device configured to inject the plastic into the injection chamber and the product chamber [0036]. 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. Claim 2 is rejected under 35 U.S.C. 103 as being unpatentable over Wu (KR 101600500) in view of Park (US 2022/0305711). As to claim 2, Wu does not explicitly state the drive device is separated from the main ejection assembly in response to the central ejection assembly lifting the main ejection assembly. For purposes of examination, the examiner has interpreted this claim as requiring that the pressing surface of the drive device does not contact the main ejection assembly. Park teaches a molding system [Abstract] wherein the drive device ( R ) is not in contact with the main ejection assembly (110) [Fig 9, 0154-0157] and notes that the drive device’s diameter is sized to match or be smaller than a diameter of a central ejection assembly (121) I order to further press than the rod in the ejection direction further than main ejection assembly [0157, 0177-0179, 0208]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have altered the invention of Wu and had the drive rod be sized such that is was smaller than a diameter of the central ejection portion and not in contact with the main ejection assembly, as suggested by Park, in order to allow for the capability of extending the central ejection assembly further than the main ejection assembly. Claim 5 is rejected under 35 U.S.C. 103 as being unpatentable over Wu (KR 101600500) in view of Aiba (US 2019/0315033). As to claim 5, the drive device further comprises: a drive rod (300), wherein the pushing block (310) is placed on the drive rod (300); and notes a controlling device the drive rod moving in a vertical direction [0039]. One of ordinary skill in the art would reasonably surmise that this control device would be inclusive of a motor. Additionally, Aiba teaches an injection molding apparatus [Abstract] wherein ejection means remove the sprue from the molding device and notes that the drive for these means “is not limited to a pneumatic or hydraulic fluid pressure cylinder, and various driving devices such as an electric motor, e.g. a motor, may be used” [0026]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have altered the invention of Wu and utilized a motor to motivate the drive rod, as suggested by Aiba, as a motor had demonstrated success for this purpose and was not critical to successful operation relative to other driving means. Claim(s) 8 is/are rejected under 35 U.S.C. 103 as being unpatentable over Wu (KR 101600500) in view of Yuan (CN 206884078) . As to claim 8, Wu teaches the two ends of the injection channel are respectively in communication with the injection chamber and the product chamber [Fig 2, 3] but does not explicitly state a channel module, wherein the first mold module comprises a slot, the channel module is disposed in the slot, and the channel module comprises an injection channel. Yuan teaches an injection molding machine [Abstract] including a channel module, wherein the first mold module comprises a slot (where slot 34 is located), the channel module (34) is disposed in the slot, and the channel module comprises an injection channel [Fig 2]. Yuan notes this design has the advantages of “simple structure, high efficiency, smoother demolding, and no breakage of the sprue” [0013]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have altered the invention of Wu and utilized a channel module, wherein the first mold module comprises a slot, the channel module is disposed in the slot, and the channel module comprises an injection channel, as suggested by Yuan, as this configuration allowed for “simple structure, high efficiency, smoother demolding, and no breakage of the sprue.” Claim(s) 9 and 10 is/are rejected under 35 U.S.C. 103 as being unpatentable over Wu (KR 101600500) in view of Yuan (CN 206884078), as applied to claim 8 above, and in further view of Wu (CN 114683491) referred to as Wu II. As to claim 9, The combination of Wu and Yuan teach the channel module further comprises a first outer surface and a second outer surface as explained above. Having one surface be inclined relative to the other, amounts to a mere change in size or shape, which is generally regarded as obvious, see MPEP 2144.04 IV. Additionally, Wu II teaches a method of injection molding wherein at least a surface 4261 is inclined relative to the other outer surface [Fig 8A, 8B] and notes its use in an injection system that lessens the required ejection force to remove the part [0003, 0004]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have altered the invention of Wu and utilized a channel module having one surface inclined relative to the other, as suggested by Wu II, as this feature had demonstrated success within injection molding machines and allowed for smaller ejection force to remove the formed part. As to claim 10, Wu does not explicitly state the channel module further comprises a notch, the first mold module further comprises an extension portion in the notch, and the product chamber extends into the extension portion. Yuan teaches an injection molding machine [Abstract] including a channel module, wherein the first mold module comprises a slot (where slot 34 is located), the channel module (34) is disposed in the slot, and the channel module comprises an injection channel; state the channel module further comprises a notch (groove approximate 31), the first mold module further comprises an extension portion in the notch (the inward jutting portion above 31), and the product chamber extends into the extension portion [Fig 2]. Yuan notes this design has the advantages of “simple structure, high efficiency, smoother demolding, and no breakage of the sprue” [0013]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have altered the invention of Wu and utilized a channel module, wherein the first mold module comprises a slot, the channel module is disposed in the slot, and the channel module comprises an injection channel, as suggested by Yuan, as this configuration allowed for “simple structure, high efficiency, smoother demolding, and no breakage of the sprue.” Additionally, Wu II teaches a method of injection molding wherein the product chamber extends into the extension portion within the notch [Fig 5] and notes its use in an injection system that lessens the required ejection force to remove the part [0003, 0004]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have altered the invention of Wu and had the product chamber extend into the extension portion of the notch, as suggested by Wu II, as this feature had demonstrated success within injection molding machines and allowed for smaller ejection force to remove the formed part. Claim(s) 11 is/are rejected under 35 U.S.C. 103 as being unpatentable over Wu (KR 101600500) in view of Yuan (CN 206884078), as applied to claims 8 above, and in further view of Zeng (CN 208410604). As to claim 11, Wu does not explicitly state the content of claim 11. Zeng teaches an injection molding machine [Abstract] wherein the channel module further comprises: a first insertion module (11) comprising a first top surface (115, 1151, 1152), a first connection surface connected to the first top surface (112), and a first injection groove (113) formed on the first connection surface [Fig 2]; and a second insertion module comprising a second top surface, a second connection surface connected to the second top surface, and a second injection groove formed on the second connection surface as another insertion module as a mirror of the half module depicted in Fig 2 is utilized in conjunction with it to form a full module [Fig 1], wherein ends of the first injection groove are in communication with the first top surface, and ends of the second injection groove are in communication with the second top surface, and when the first connection surface attaches to the second connection surface, the injection channel is formed by the first injection groove and the second injection groove [Fig 1, 2]. Zeng notes this configuration allow for removal of the sprue without effecting the appearance of the part [Abstract]. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have altered the invention of Wu and utilized first and 2nd channel modules in this configuration, as suggested by Zeng, as this configuration had demonstrated success at removing the sprue without effecting the end part. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 ARMAND MELENDEZ whose telephone number is (571)270-0342. The examiner can normally be reached 9 AM- 6 PM Monday-Friday. 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, Curtis Mayes can be reached at 571-272-1234. 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. /ARMAND MELENDEZ/Primary Examiner, Art Unit 1759
Read full office action

Prosecution Timeline

Oct 31, 2023
Application Filed
Dec 20, 2025
Non-Final Rejection — §102, §103, §112
Jan 14, 2026
Response Filed
Feb 02, 2026
Final Rejection — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600067
INJECTION DEVICE
2y 5m to grant Granted Apr 14, 2026
Patent 12594711
RECIPROCATING INJECTION UNIT
2y 5m to grant Granted Apr 07, 2026
Patent 12594702
MACHINE AND METHOD FOR INJECTION MOLDING MULTILAYER ARTICLES HAVING A HIGH PROPORTION OF INTERNAL LAYER MATERIAL
2y 5m to grant Granted Apr 07, 2026
Patent 12533836
INJECTION MOLDING UNIT FOR AN INJECTION MOLDING MACHINE FOR PROCESSING PLASTICS
2y 5m to grant Granted Jan 27, 2026
Patent 12528238
DRIVE MECHANISM, INJECTION APPARATUS, AND INJECTION MOLDING MACHINE
2y 5m to grant Granted Jan 20, 2026
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
47%
Grant Probability
89%
With Interview (+42.7%)
3y 4m
Median Time to Grant
Moderate
PTA Risk
Based on 350 resolved cases by this examiner. Grant probability derived from career allow rate.

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