Prosecution Insights
Last updated: April 19, 2026
Application No. 18/441,653

COMPOSITION FOR PREVENTING OR TREATING LIVER FIBROSIS INCLUDING SANGUISORBA OFFICINALIS EXTRACT AS ACTIVE INGREDIENT

Non-Final OA §102§103§112
Filed
Feb 14, 2024
Examiner
MELLER, MICHAEL V
Art Unit
1655
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Korea Institute Of Science And Technology
OA Round
1 (Non-Final)
46%
Grant Probability
Moderate
1-2
OA Rounds
3y 1m
To Grant
75%
With Interview

Examiner Intelligence

Grants 46% of resolved cases
46%
Career Allow Rate
336 granted / 733 resolved
-14.2% vs TC avg
Strong +29% interview lift
Without
With
+29.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
73 currently pending
Career history
806
Total Applications
across all art units

Statute-Specific Performance

§101
12.1%
-27.9% vs TC avg
§103
42.3%
+2.3% vs TC avg
§102
23.5%
-16.5% vs TC avg
§112
14.2%
-25.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 733 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 . 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. Claims 1-10 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, because the specification, while being enabling for treating liver fibrosis via administering the claimed extract, does not reasonably provide enablement for preventing liver fibrosis. The specification does not enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and/or use the invention commensurate in scope with these claims. In this regard, the application disclosure and claims have been compared per the factors indicated in the decision In re Wands, 8 USPQ2d 1400 (Fed. Cir., 1988) as to undue experimentation. The factors include: 1) the nature of the invention; 2) the breadth of the claims; 3) the predictability or unpredictability of the art 4) the amount of direction or guidance presented; 5) the presence or absence of working examples; 6) the quantity of experimentation necessary; 7) the state of the prior art; and, 8) the relative skill of those skilled in the art. With respect to the Wands factors above (particularly as they pertain to the quantity of experimentation necessary as well as the state of the prior art within the medical field), Applicants have reasonably demonstrated/disclosed that the claimed extract composition is useful as a therapeutic agent for treating liver fibrosis. However, the claims also encompass using the claimed extract to prevent liver fibrosis from occurring (which encompasses preventing all conceivable types of liver fibrosis, to name a few – all of which are well-recognized in the art as being difficult to treat, much less prevent) which is clearly beyond the scope of the instantly disclosed/claimed invention. Please note that the term "prevent" encompasses absolutely preventing which reads upon completely stopping liver fibrosis from occurring and, thus, requires a higher standard for enablement than does "treat", especially since it is notoriously well accepted in the medical art that the vast majority of afflictions/disorders suffered by mankind cannot be totally prevented with current therapies - including preventing such disorders as liver fibrosis (which clearly is not recognized in the medical art as being totally preventable). According, it would take undue experimentation without a reasonable expectation for one of skill the art to prevent liver fibrosis via administering the recited extract thereto – as instantly claimed. The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 5 and 10 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claims 5 and 10 are indefinite, vague and confusing since it is not clear what “wherein the Sanguisorba officinalis extract is included at 1 to 100 µg/mL in the composition, and the ziyuglycoside is included at 1 to 100 µM in the composition” actually means. The extract is included at 1 to 100 microgram/milliliter since “included” and “comprises” can encompass amounts other than claimed. The same is true for ziyuglycoside which is “included” at 1 to 100 µM in the composition. By using both “included” and “comprises” the amounts in the claim are meaningless since “included” is in addition to what is already in the composition, thus the amounts are meaningless. Claim Rejections - 35 USC § 102 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 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. Claims 1-10 are rejected under 35 U.S.C. 102 (a)(1) as being anticipated by Chiang et al. (US 2015/0010484). Chiang teaches that ziyuglycoside-I is extracted from Sanguisorba officinalis with 70% ethanol, see paragraph 9. Since it is taught that the extract can inhibit the expression of MMP-1, then it is inherent that the ziyuglycoside-I extract from Sanguisorba officinalis with 70% ethanol will be included at 1 to 100 micromole and that the extract is included at 1 to 100 microgram/milliliter since “included” and “comprises” can encompass amounts other than claimed. The activities claimed are inherent since the same extract and compound as claimed are taught by Chiang. By using both “included” and “comprises” the amounts in the claim are meaningless since “included” is in addition to what is already in the composition, thus the amounts are meaningless. 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. Claims 1-10 are rejected under 35 U.S.C. 103 as being unpatentable over Chiang et al. (US 2015/0010484). Chiang teaches that ziyuglycoside-I is extracted from Sanguisorba officinalis with 70% ethanol, see paragraph 9. Since it is taught that the extract can inhibit the expression of MMP-1, then it is inherent that the ziyuglycoside-I extract from Sanguisorba officinalis with 70% ethanol will be included at 1 to 100 micromole and that the extract is included at 1 to 100 microgram/milliliter since “included” and “comprises” can encompass amounts other than claimed. The activities claimed are inherent since the same extract and compound as claimed are taught by Chiang. By using both “included” and “comprises” the amounts in the claim are meaningless since “included” is in addition to what is already in the composition, thus the amounts are meaningless. MPEP 2144.05, subsection II. II. ROUTINE OPTIMIZATION A. Optimization Within Prior Art Conditions or Through Routine Experimentation Generally, differences in concentration or temperature will not support the patentability of subject matter encompassed by the prior art unless there is evidence indicating such concentration or temperature is critical. "[W]here the general conditions of a claim are disclosed in the prior art, it is not inventive to discover the optimum or workable ranges by routine experimentation." In re Aller, 220 F.2d 454, 456, 105 USPQ 233, 235 (CCPA 1955) (Claimed process which was performed at a temperature between 40°C and 80°C and an acid concentration between 25% and 70% was held to be prima facie obvious over a reference process which differed from the claims only in that the reference process was performed at a temperature of 100°C and an acid concentration of 10%.); see also Peterson, 315 F.3d at 1330, 65 USPQ2d at 1382 ("The normal desire of scientists or artisans to improve upon what is already generally known provides the motivation to determine where in a disclosed set of percentage ranges is the optimum combination of percentages."); In re Hoeschele, 406 F.2d 1403, 160 USPQ 809 (CCPA 1969) (Claimed elastomeric polyurethanes which fell within the broad scope of the references were held to be unpatentable thereover because, among other reasons, there was no evidence of the criticality of the claimed ranges of molecular weight or molar proportions.). For more recent cases applying this principle, see Merck & Co. Inc. v. Biocraft Lab. Inc., 874 F.2d 804, 10 USPQ2d 1843 (Fed. Cir.), cert. denied, 493 U.S. 975 (1989); In re Kulling, 897 F.2d 1147, 14 USPQ2d 1056 (Fed. Cir. 1990); and In re Geisler, 116 F.3d 1465, 43 USPQ2d 1362 (Fed. Cir. 1997); Smith v. Nichols, 88 U.S. 112, 118-19 (1874) (a change in form, proportions, or degree "will not sustain a patent"); In re Williams, 36 F.2d 436, 438 (CCPA 1929) ("It is a settled principle of law that a mere carrying forward of an original patented conception involving only change of form, proportions, or degree, or the substitution of equivalents doing the same thing as the original invention, by substantially the same means, is not such an invention as will sustain a patent, even though the changes of the kind may produce better results than prior inventions."). See also KSR Int’l Co. v. Teleflex Inc., 550 U.S. 398, 416 (2007) (identifying "the need for caution in granting a patent based on the combination of elements found in the prior art."). B. There Must Be an Articulated Rationale Supporting the Rejection In order to properly support a rejection on the basis that an invention is the result of "routine optimization", the examiner must make findings of relevant facts, and present the underpinning reasoning in sufficient detail. The articulated rationale must include an explanation of why it would have been routine optimization to arrive at the claimed invention and why a person of ordinary skill in the art would have had a reasonable expectation of success to formulate the claimed range. See In re Stepan, 868 F.3d 1342, 1346, 123 USPQ2d 1838, 1841 (Fed. Cir. 2017). See also In re Van Os, 844 F.3d 1359,1361,121 USPQ2d 1209, 1211 (Fed. Cir. 2017 ("Absent some articulated rationale, a finding that a combination of prior art would have been ‘common sense’ or ‘intuitive’ is no different than merely stating the combination ‘would have been obvious.’"); Arendi S.A.R.L. v. Apple Inc., 832 F.3d 1355, 1362, 119 USPQ2d 1822 (Fed. Cir. 2016) ("[R]eferences to ‘common sense’ … cannot be used as a wholesale substitute for reasoned analysis and evidentiary support … ."). The Supreme Court has clarified that an "obvious to try" line of reasoning may properly support an obviousness rejection. In In re Antonie, 559 F.2d 618, 195 USPQ 6 (CCPA 1977), the CCPA held that a particular parameter must first be recognized as a result-effective variable, i.e., a variable which achieves a recognized result, before the determination of the optimum or workable ranges of said variable might be characterized as routine experimentation, because "obvious to try" is not a valid rationale for an obviousness finding. However, in KSR International Co. v. Teleflex Inc., 550 U.S. 398 (2007), the Supreme Court held that "obvious to try" was a valid rationale for an obviousness finding, for example, when there is a "design need" or "market demand" and there are a "finite number" of solutions. 550 U.S. at 421 ("The same constricted analysis led the Court of Appeals to conclude, in error, that a patent claim cannot be proved obvious merely by showing that the combination of elements was ‘[o]bvious to try.’ ... When there is a design need or market pressure to solve a problem and there are a finite number of identified, predictable solutions, a person of ordinary skill has good reason to pursue the known options within his or her technical grasp. If this leads to the anticipated success, it is likely the product not of innovation but of ordinary skill and common sense. In that instance the fact that a combination was obvious to try might show that it was obvious under §103."). Thus, after KSR, the presence of a known result-effective variable would be one, but not the only, motivation for a person of ordinary skill in the art to experiment to reach another workable product or process. Therefore, to use the claimed amounts would have been obvious to one having ordinary skill in the art since clearly the ziyuglycoside-I and the Sanguisorba officinalis extract are result effective variables since they are the active ingredients in inhibiting the expression of matrix metalloproteinase-1 in the reference. Thus, through routine experimentation, it would have been obvious for one having ordinary skill in the art to use the claimed amounts in an effort to optimize the desired results. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL V MELLER whose telephone number is (571)272-0967. The examiner can normally be reached M-F 9 am-5:30 pm. 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, Anand Desai can be reached at 571-272-0947. 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. MICHAEL V. MELLER Primary Examiner Art Unit 1655 /MICHAEL V MELLER/Primary Examiner, Art Unit 1655
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Prosecution Timeline

Feb 14, 2024
Application Filed
Jan 18, 2026
Non-Final Rejection — §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

1-2
Expected OA Rounds
46%
Grant Probability
75%
With Interview (+29.0%)
3y 1m
Median Time to Grant
Low
PTA Risk
Based on 733 resolved cases by this examiner. Grant probability derived from career allow rate.

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