Prosecution Insights
Last updated: October 02, 2026
Application No. 18/037,139

FORMULATIONS, METHODS, AND PRE-FILLED INJECTION DEVICES WITHOUT FATTY ACID PARTICLES

Non-Final OA §103
Filed
May 16, 2023
Priority
Nov 16, 2020 — provisional 63/114,192 +1 more
Examiner
GONZALEZ, LEI NMN
Art Unit
3783
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
W. L. Gore & Associates Inc.
OA Round
2 (Non-Final)
43%
Grant Probability
Moderate
2-3
OA Rounds
7m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 43% of resolved cases
43%
Career Allowance Rate
9 granted / 21 resolved
-27.1% vs TC avg
Strong +52% interview lift
Without
With
+51.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 11m
Avg Prosecution
33 currently pending
Career history
68
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
51.1%
+11.1% vs TC avg
§102
27.9%
-12.1% vs TC avg
§112
20.1%
-19.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 21 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 . Status of Claims This office action is responsive to the amendment filed 17 March 2026. Claims 2 and 23-98 are canceled. Claims 1, 4, 10, and 20-22 are amended. Claims 1 and 3-22 are presently pending in this application. Claim Objections Claim 1 is objected to because of the following informalities: “the one more pharmacological agents” – missing –or--. Interpreted as --one or more-- Appropriate correction is required. 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. Claims 1 and 3-22 are rejected under 35 U.S.C. 103 as being unpatentable over Rusch et al (Foreign Patent Publication No. WO 2017123840 A1), hereinafter Rusch, in view of Kim et al. (Foreign Patent Publication No. CA 3130457 A1), hereinafter Kim, in further view of Abrams et al. (US Patent Publication No. 20190240354 A1), hereinafter Abrams. Regarding claim 1, Rusch discloses a pre-filled injection device (Rusch: Fig. 1, syringe 10 is pre-filled; para. 0030) comprising: a stopper (Fig. 1, stopper 100) ; a barrel (Fig. 1, barrel 15); a solid lubricant (Fig. 1, laminate layers 130) on the stopper (Fig. 1, laminate layers 130 are disposed on stopper 100), the pre-filled injection device (10) includes from about 0 picograms to about 5 micrograms of a liquid lubricant (inner surface of barrel 15 is free of silicone oil; para. 0006); and a therapeutic formulation (Fig. 1, pharmaceutical composition 135) and comprising at least about 1 mg/ml (104 mg/ml; para. 0060) of one or more active pharmacological agents (therapeutic compounds can include antibodies, proteins, RNA interference, etc.; para. 0053 and 0056), wherein the therapeutic formulation (135) includes from about 0 wt.% to about 0.1 wt.% concentration of surfactant (method prevents or reduces the formation of fatty acid particles in a formulation; para. 0007) and from about 0 to about 600 fatty acid particles of a size greater than 25 microns (the formulation of Rusch may or may not comprise fatty acid particles; para. 0007. Therefore, examiner interprets that the formulation of Rusch comprises 0 particles of fatty acid), and wherein the one or more pharmacological agents comprise RNA interference (therapeutic compounds can include antibodies, proteins, RNA interference, etc.; para. 0053 and 0056). Rusch does not expressly disclose the therapeutic formulation having lipase activity. Kim teaches a therapeutic formulation (Kim: formulation: para. 0041) having lipase activity (formulation can comprise lipase enzyme; para. 0041). It would have been obvious to one of ordinary skill in the art before the effective filing date to modify the therapeutic formulation of Rusch such that the therapeutic formulation has lipase activity as taught by Kim in order to hydrolyze polysorbate surfactant to form fatty acid particles (Kim: para. 0071) to control particle formation, increase turbidity, and decrease time of initial dose-dependent response (para. 0081). Rusch In view of Kim and Abrams does not expressly disclose the one or more pharmacological agents comprise small interfering RNAs (siRNAs), small interfering DNAs (siDNAs), messenger RNAs (mRNAs), messenger RNAs (mRNAs), aptamers, and/or any combination thereof. Abrams teaches one or more pharmacological agents (Abrams: therapeutic nucleic acid; para. 0077) comprise small interfering RNAs (siRNAs), small interfering DNAs (siDNAs), messenger RNAs (mRNAs), messenger RNAs (mRNAs), aptamers, and/or any combination thereof (mRNA; para. 0077). It would have been obvious to one of ordinary skill in the art before the effective filing date to modify the pharmacological agents of Rusch in view of Kim such that the one or more pharmacological agents comprise small interfering RNAs (siRNAs), small interfering DNAs (siDNAs), messenger RNAs (mRNAs), messenger RNAs (mRNAs), aptamers, and/or any combination thereof as taught by Abrams in order to perform mRNA-directed expression of an amount of a protein that causes a desirable effect in the subject (Abrams: para. 0077). Regarding claim 3, Rusch in view of Kim and Abrams discloses the device above, wherein the therapeutic formulation (Rusch: 135) includes the one or more active pharmacological agents (para. 0053 and 0056) at a concentration from about 1 mg/ml to about 200 mg/ml (104 mg/ml; para. 0060). Regarding claim 4, Rusch in view of Kim and Abrams discloses the device above, wherein the therapeutic formulation (Rusch: 135) includes from about 0 wt.% to about 0.1 wt.% concentration of surfactant and from about 0 to about 600 fatty acid particles of a size greater than 25 microns. Rusch is silent to the formulation comprising surfactant. Rusch is also silent to the formulation comprising polysorbate 20, 40, 60, and/or 80. Therefore, examiner interprets that the formulation of Rusch is free of surfactant. Regarding claim 5, Rusch in view of Kim and Abrams discloses the device above, wherein the therapeutic formulation (Rusch: 135) includes the surfactant at a concentration from 0 wt.% to about 0.1 wt.%. Rusch is silent to the formulation comprising surfactant. Rusch is also silent to the formulation comprising polysorbate 20, 40, 60, and/or 80. Therefore, examiner interprets that the formulation of Rusch comprises surfactant at 0 wt.%. Regarding claim 6, Rusch in view of Kim and Abrams discloses the device above. Rusch does not expressly disclose the therapeutic formulation comprises a buffer having a pH from about 4.0 to about 9.5, from about 4.5 to about 9.0, from about 5.0 to about 8.5, from about 5.5 to about 8.0, from about 5.5 to about 7.5, from about 5.5 to about 7.0, or from about 5.5 to about 6.5. Kim teaches a therapeutic formulation (Kim: formulation: para. 0041) comprises a buffer (buffered solution; para. 0074) having a pH from about 4.0 to about 9.5 (buffered solution has a pH of 7.5). it would have been an obvious matter of design choice to modify the therapeutic formula of Rusch to comprise a buffer of a pH from about 4.0 to about 9.5, from about 4.5 to about 9.0, from about 5.0 to about 8.5, from about 5.5 to about 8.0, from about 5.5 to about 7.5, from about 5.5 to about 7.0, or from about 5.5 to about 6.5, as taught by Kim, since applicant has not disclosed that this limitation solves any stated problem or is for any particular purpose and it appears that the device would perform equally well with either designs. Absent a teaching as to criticality that the pH is from about 4.0 to about 9.5, from about 4.5 to about 9.0, from about 5.0 to about 8.5, from about 5.5 to about 8.0, from about 5.5 to about 7.5, from about 5.5 to about 7.0, or from about 5.5 to about 6.5, this particular arrangement is deemed to have been known by those skilled in the art since the instant specification and evidence of record fail to attribute any significance (novel or unexpected results) to a particular arrangement. Regarding claim 7, Rusch in view of Kim and Abrams discloses the device above, wherein the therapeutic formulation (Rusch: 135) comprises a sugar having a concentration from 0 wt.% to about 15 wt.%, from about 0.1 wt.% to about 15 wt.%, from about 1 wt.% to about 15 wt.%, from about 1.5 wt.% to about 10 wt.%, from about 2 wt.% to about 10 wt.%, from about 3 wt.% to about 10 wt.%, and/or from about 5 wt.% to about 10 wt.%. The formulation of Rusch may or may not comprise sugar (dextrose; para. 0060). Therefore, examiner interprets that the formulation of Rusch comprises sugar at 0 wt.%. Regarding claim 8, Rusch in view of Kim and Abrams discloses the device above, wherein the therapeutic formulation (Rusch: 135) comprises a polyol having a concentration from 0 wt.% to about 5 wt.%, from about 0.1 wt.% to about 5 wt.%, from about 1 wt.% to about 5 wt.%, from about 1.5 wt.% to about 5 wt.%, from about 2 wt.% to about 5 wt.%, and/or from about 3 wt.% to about 5 wt.%. The formulation of Rusch may or may not comprise polyol (mannitol; para. 0060). Therefore, examiner interprets that the formulation of Rusch comprises polyol at 0 wt.%. Regarding claim 9, Rusch in view of Kim and Abrams discloses the device above, wherein the therapeutic formulation (Rusch: 135) comprises an arginine salt having a concentration from 0 wt.% to about 5 wt.%, from about 0.1 wt.% to about 5 wt.%, from about 1 wt.% to about 5 wt.%, from about 1.5 wt.% to about 5 wt.%, from about 2 wt.% to about 5 wt.%, and/or from about 3 wt.% to about 5 wt.%. The formulation of Rusch may or may not comprise arginine salt (arginine hydrochloride; para. 0060). Therefore, examiner interprets that the formulation of Rusch comprises arginine salt at 0 wt.%. Regarding claim 10, Rusch in view of Kim and Abrams discloses the device above, wherein the stopper and the barrel includes from about 0 picograms to about 5 micrograms of the liquid lubricant silicone (Rusch: free of silicone oil; para. 0006). Regarding claim 11, Rusch in view of Kim and Abrams discloses the device above, wherein the barrel (Rusch: 15) is made of at least one of a glass material (barrel is made of glass; para. 0006). Regarding claim 12, Rusch in view of Kim and Abrams discloses the device above, wherein the solid lubricant (Rusch: 130) is a low coefficient of friction polymer layer (laminate layer 130 is a low coefficient of friction fluoropolymer layer; para. 0029 and 0031) and the stopper (100) comprises an elastomeric body (Fig. 1, elastomeric body 125) and the low coefficient of friction polymer layer (130; para. 0029 and 0031) positioned on the elastomeric body (Fig. 1, 130 is positioned on 125; para. 0029 and 0031). Regarding claim 13, Rusch in view of Kim and Abrams discloses the device above, wherein the low coefficient of friction polymer layer (Rusch: 130; para. 0029 and 0031) comprises a fluoropolymer (laminate layer 130 may include a fluoropolymer layer; para. 0029 and 0031). Regarding claim 14, Rusch in view of Kim and Abrams discloses the device above, wherein the fluoropolymer (Rusch: 130 may include a fluoropolymer layer; para. 0029 and 0031) of the low coefficient of friction polymer layer (130; para. 0029 and 0031) is an expanded fluoropolymer (fluoropolymer may be expanded fluoropolymer; para. 0032). Regarding claim 15, Rusch in view of Kim and Abrams discloses the device above, wherein the elastomeric body (Rusch: 125) is at least partially imbibed into the expanded fluoropolymer (para. 0032) of the low coefficient of friction polymer layer (elastomeric body 125 may partially penetrate porous layer 150 of laminate layers 130; para. 0037). Regarding claim 16, Rusch in view of Kim and Abrams discloses the device above, wherein the fluoropolymer of the low coefficient of friction polymer layer (Rusch: 130; para. 0029 and 0031) is an expanded polytetrafluoroethylene (ePTFE) (fluoropolymer may be ePTFE; para. 0033). Regarding claim 17, Rusch in view of Kim and Abrams discloses the device above, wherein the fluoropolymer of the low coefficient of friction polymer layer (Rusch: 130; para. 0029 and 0031) comprises a composite fluoropolymer film (fluoropolymer film; para. 0032) having a barrier layer (Fig. 3, barrier layer 140) and a porous layer (Fig. 3, porous layer 150), the barrier layer (140) comprising expanded polytetrafluoroethylene (ePTFE) (fluoropolymer may be ePTFE; para. 0033). Regarding claim 18, Rusch in view of Kim and Abrams discloses the device above, wherein the therapeutic formulation (Rusch: 135) in the pre-filled injection device (10) includes fatty acid particles of a size greater than 25 microns from 0 to about 600 particles. The formulation of Rusch may or may not comprise fatty acid particles (para. 0007). Therefore, examiner interprets that the formulation of Rusch comprises 0 particles of fatty acid. Regarding claim 19, Rusch in view of Kim and Abrams discloses the device above, wherein the therapeutic formulation (Rusch: 135) in the pre-filled injection device (10) includes fatty acid particles of a size greater than 10 microns from 0 to about 6000 particles, from 0 to about 3000 particles, from 0 to about 1000 particles, from 0 to about 200 particles, from 0 to about 50 particles, from 0 to about 20 particles, and/or from 0 to about 10 particles. The formulation of Rusch may or may not comprise fatty acid particles (para. 0007). Therefore, examiner interprets that the formulation of Rusch comprises 0 particles of fatty acid. Regarding claim 20, Rusch in view of Kim and Abrams discloses the device above, wherein the therapeutic formulation (Rusch: 135) includes from about 0 wt.% to about 0.1 wt.% concentration of a surfactant and from about 0 to about 600 fatty acid particles of a size greater than 25 microns when stored at 2 °C to 8 °C for at least about 1 year. The formulation of Rusch may or may not comprise fatty acid particles (para. 0007). Therefore, examiner interprets that the formulation of Rusch comprises no particles of fatty acid. Regarding claim 21, Rusch in view of Kim and Abrams discloses the device above, wherein the therapeutic formulation includes from about 0 wt.% to about 0.1 wt.% concentration of a surfactant and from about 0 to about 600 fatty acid particles of a size greater than 25 microns when stored at 2 °C to 8 °C for at least about 2 years. The formulation of Rusch may or may not comprise fatty acid particles (para. 0007). Therefore, examiner interprets that the formulation of Rusch comprises no particles of fatty acid. Regarding claim 22, Rusch in view of Kim and Abrams discloses the device above, wherein the therapeutic formulation includes from about 0 wt.% to about 0.1 wt.% concentration of a surfactant and from about 0 to about 600 fatty acid particles of a size greater than 25 microns after being subjected to accelerated aging, which involves heating the therapeutic formulation to 40 °C for 2 months and then cooling the therapeutic formulation to 5 °C for at least 24 hours. The formulation of Rusch may or may not comprise fatty acid particles (para. 0007). Therefore, examiner interprets that the formulation of Rusch comprises no particles of fatty acid. Response to Arguments Applicant’s arguments, see page 7-10, filed 17 March 2026, with respect to the rejections of claims 1 and 3-22 under 35 USC 103 have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new grounds of rejection is made in view of Rusch in view of Kim and Abrams cited above. 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 LEI GONZALEZ whose telephone number is (703)756-5908. The examiner can normally be reached 7:30am - 4:00pm (CT). 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, Chelsea Stinson can be reached at (571) 270-1744. 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. /LEI GONZALEZ/ Examiner, Art Unit 3783 /SCOTT J MEDWAY/ Primary Examiner, Art Unit 3783
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Prosecution Timeline

May 16, 2023
Application Filed
Dec 17, 2025
Non-Final Rejection mailed — §103
Mar 17, 2026
Response Filed
Apr 08, 2026
Final Rejection mailed — §103
Jul 08, 2026
Response after Non-Final Action

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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
43%
Grant Probability
95%
With Interview (+51.8%)
3y 11m (~7m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 21 resolved cases by this examiner. Grant probability derived from career allowance rate.

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