BAUER, Circuit Judge.

The issue here is the validity of the general business licensing ordinance of the City of Indianapolis under the First Amendment, as applied to the States by the Fourteenth Amendment. Plaintiff-appellant Charles Chulchian was denied a license to operate a movie theatre under the ordinance. He appeals that part of the district court's order, which upheld certain sections of the ordinance. We affirm the district court's order.

I.

The City of Indianapolis, defendant-appellee here, requires the annual licensing of all businesses in the City. Regulations issued pursuant to the licensing ordinance designate a license administrator as the first level of review. If an application for a license is denied, the applicant is entitled to a hearing before the controller. If the controller also denies the application, the applicant may then appeal to a license review board, whose decision is final.

Plaintiff-appellant Charles Chulchian operates the Rivoli Theater, a movie theatre in Indianapolis, Indiana. The theatre exhibits sexually explicit films. In years prior to 1979, Chulchian sought and obtained a license from the City. Chulchian's application for his 1979 license, however, was denied first by the license administrator and, after a hearing, by the controller. Both the administrator and the controller stated two reasons for refusing Chulchian's license. Both stated that Chulchian violated section 17-6(4) of the ordinance because there were at least ten arrests on the premises for "illegal, immoral or obscene conduct." Second, they stated that the "residents of the area consider the Rivoli "to create a nuisance,'" in violation of section 17-6(2). Chulchian then filed this suit, attacking the constitutionality of the licensing ordinance and seeking declaratory and injunctive relief under 42 U.S.C. § 1983. The License Review Board voluntarily stayed its consideration of Chulchian's appeal pending the court's decision.

On Chulchian's motion for summary judgment, the district court ruled that certain sections of the licensing ordinance were unconstitutional. Evansville Book Mart, Inc. v. City of Indianapolis, 477 F. Supp. 128 (S.D.Ind. 1979). The court first reviewed the arrests constituting the "illegal, immoral or obscene conduct" allegedly permitted by appellant. The arrests were made pursuant to Indianapolis Code § 20-44, the "obscene conduct ordinance." Without ruling on the ordinance's constitutionality, the court held it invalid under Indiana law as an attempted local law. Id. at 131.

The court next considered Chulchian's challenges to the two sections on which the controller based denial of his license. The court struck down section 17-31(c)(6) of the ordinance, which permits the controller

to take into consideration the effect of the proposed business or calling upon surrounding property and upon residents or inhabitants thereof; and in granting, denying or revoking said license the controller may exercise his sound discretion as to whether said license should be granted, transferred, denied or revoked.

Code of Indianapolis § 17-31(c)(6). The court held the section "unconstitutional due to its lack of guiding standards for the licensing officials," 477 F. Supp. at 132-33.

The second section provides that a licensee shall "[n]ot permit any sort of illegal, immoral or obscene conduct or practices to take place on his premises or in the conduct of his business." Code of Indianapolis § 17-6(4). The City conceded, and the court ruled, that the use of the words "immoral" and "obscene" was unconstitutional. 477 F. Supp. at 131. The court upheld the rest of the ordinance "because it is content neutral in that it does not single out adult theatres, and is the expression of an equally legitimate City concern, the City's interest in preventing the licensing of businesses the owners of which permit illegal occurrences." Id. at 132. The court ruled that the City may constitutionally deny a license on the basis of illegal conduct other than prior convictions for showing obscene films. The court stated that it did not "have before it documentation of arrests under valid statutes." Id. The court nevertheless denied appellant's request to order the issuance of a license because of representations by the City that "other arrests for violations of valid state statutes had been made recently at the theatre." Id. The court also upheld as constitutionally sufficient the procedures governing the decision of the controller and the License Review Board. Id. at 130.

Chulchian appeals, first, the district court's order upholding the "permitting illegal conduct" portion of section 17-6(4); second, the court's ruling upholding the constitutionality of the procedures governing the controller's decision of the License Review Board; and third, the court's refusal to order the City to issue him a license.

II.

At the outset, we must resolve the procedural posture of this suit. A license to do business in Indianapolis is effective for only one year. We did not hear oral argument until April 1980, after appellant's 1979 license would have expired. The License Review Board, which had agreed to stay consideration of appellant's appeal until this court rendered its decision, dismissed Chulchian's appeal. The present appeal is not moot, however, because appellant's application for a 1980 license has also been denied.

The License Administrator denied appellant's application on the grounds that his 1979 License had been denied and that under section 17-6(2) the operation of his business constituted a nuisance. These reasons are substantially the same as those advanced to deny appellant's 1979 license. We therefore consider the merits of appellant's case as a situation "`capable of repetition, yet evading review.'" Roe v. Wade, 410 U.S. 113, 125, 93 S.Ct. 705, 713, 35 L.Ed.2d 147 (1973), quoting Southern Pacific Terminal Co. v. I.C.C., 219 U.S. 498, 515, 31 S.Ct. 279, 283, 55 L.Ed. 310 (1911).

III. A.

The district court's decision striking the words "obscene" and "immoral" from section 17-6(4) is not challenged by the parties. As construed by the district court, the section now reads that a licensee "shall not permit any sort of illegal conduct or practices to take place . . . ." Appellant argues that the ordinance is unconstitutionally vague because "permit" is undefined and because the type of illegal conduct which will justify denial is not specified.

Although the ordinance has not been authoritatively construed by the Indiana courts, the body charged with its enforcement, the City, has provided a narrowing construction of the statute. See Law Students Civil Rights Research Council, Inc. v. Wadmond, 401 U.S. 154, 162-63, 91 S.Ct. 720, 726, 27 L.Ed.2d 749 (1971). The City first concedes that it cannot deny a license based on conduct beyond the licensee's control. The City acknowledges that section 17-6(4) requires knowledge of the illegal conduct by the licensee. We agree that such a construction sufficiently clarifies "permit."

We also agree that the ordinance has standards for its enforcement. The ordinance prohibits a licensee from knowingly allowing any illegal activity, i.e., any violation of law. It is hornbook law that all persons are deemed to have notice of the law. Other laws which similarly impose liability for violations of law have been upheld from vagueness attacks. See, e.g., United States v. Polizzi, 500 F.2d 856, 874-75 (9th Cir. 1974), cert. denied, 419 U.S. 1121, 95 S.Ct. 802, 42 L.Ed.2d 820 (1975). (Interstate Travel Act.) Compare Entertainment Concepts, Inc., III v. Maciejewski, 631 F.2d 497 (7th Cir. 1980) (no definition of "adult" in zoning ordinance). While the ordinance grants discretion to the controller and the License Review Board to consider the quantity and quality of illegal conduct, it is not vague.

Chulchian next challenges section 17-6(4) as an impermissible regulation of his movie theatre. Chulchian asserts that the ordinance impermissibly treads on constitutionally protected speech because it authorizes the closing of his theatre if he permits illegal conduct. We disagree.

Businesses which deal in material protected by the First Amendment, for example bookstores and theatres, are not immune from all regulation. They can be subject to the usual panoply of health, safety, licensing, and zoning regulations as all other businesses. See Young v. American Mini Theatres, Inc., 427 U.S. 50, 62, 79, 96 S.Ct. 2440, 2448, 2456, 49 L.Ed.2d 310 (Powell, J., concurring) (1976); Genusa v. City of Peoria, 619 F.2d 1203, 1214, 1218 (7th Cir. 1980). Enforcement of the ordinance here, however, implicates First Amendment rights. The four part test of United States v. O'Brien, 391 U.S. 367, 88 S.Ct. 1673, 20 L.Ed.2d 672 (1968), therefore governs our review. Under that test, a governmental regulation is justified, despite its incidental impact on speech,

if it is within the constitutional power of the Government; if it furthers an important or substantial governmental interest; if the governmental interest is unrelated to the suppression of free expression; and if the incidental restriction on alleged First Amendment freedoms is no greater than is essential to the furtherance of that interest.

Id. at 377, 88 S.Ct. at 1679. We hold that section 17-6(4), as now construed, meets all these requirements. Consequently, we hold that enforcement of the ordinance by denial of a license is constitutional.

First, the section applies to all businesses in Indianapolis. Although it covers theatres, it does not regulate them based on content. Compare Entertainment Concepts, Inc., III v. Maciejewski; Genusa v. City of Peoria. The Indianapolis provision is typical of many municipal licensing ordinances which hold the operator responsible for conduct on the premises. See, e.g., James Bakalis nickie Bakalis, Inc. v. Simonson, 434 F.2d 515, 519 (D.C. Cir. 1970) (liquor license ordinance).

The district court held the ordinance valid as fulfilling "the City's interest in preventing the licensing of businesses the owners of which permit illegal occurrences." 477 F. Supp. at 132. The ordinance serves the dual goal of encouraging business responsibility and protecting patrons who frequent the premises. The City may reasonably desire to protect the health, safety, and welfare of patrons of business from illegal conduct, and the City's interest may properly extend beyond health and safety laws. Ralston v. Ryan, 217 Ind. 482, 29 N.E.2d 202 (1940).

The ordinance furthers this interest. First, the illegal conduct must occur on the premises where it is likely to affect the patrons. Next, because of the knowledge requirement, the ordinance does not penalize a licensee for an isolated incident over which he has no control. The ordinance therefore furthers a legitimate and substantial governmental interest that is unrelated to the suppression of free expression. United States v. O'Brien, 391 U.S. at 377, 88 S.Ct. at 1679.

The ordinance here is distinguishable from an ordinance forbidding licensing of an applicant who has been convicted of certain crimes. See, e.g., Genusa v. City of Peoria, 619 F.2d at 1218-19. Such regulations offend two constitutional values — they first deny a certain class of people the opportunity to exercise. First Amendment rights; second, they have not been shown to further any legitimate state interest. Id. A licensee's conduct off the premises may or may not be related to the conduct of his business. In addition, the "criminal convictions" type of statute invariably penalizes the licensee for prior conduct which again may or may not be related to his present conduct of his business. The Indianapolis ordinance, in contrast, holds a licensee responsible only for present conduct on the premises.

Finally, the means chosen are limited so as not to trample on protected expression. United States v. O'Brien, 391 U.S. at 377, 88 S.Ct. at 1679. The ordinance, as we have construed it, requires that a licensee knowingly permit illegal conduct. The City conceded that it cannot use obscenity convictions to justify denial of a license. See Vance v. Universal Amusement Co., Inc., 445 U.S. 308, 100 S.Ct. 1156, 63 L.Ed.2d 413 (1980). The City acknowledged in oral argument that it bears the burden to prove knowledge, so that a licensee does not act at his peril. The City also indicated that it would not deny a license because of an isolated incident, but would require a pattern of arrests. The discretion granted under the ordinance is therefore not boundless. As construed by Judge Steckler and this opinion, the provision is constitutional on its face.

B.

The scope of our review of the procedures contained in the Indianapolis licensing ordinance has been narrowed considerably due to several concessions by the City in its brief and oral argument. The City first concedes that the applicant must show only that he is generally qualified for a license under sections 17-31(c) and 17-29. Cf. Indiana State Bd. of Registration v. Cummings, 387 N.E.2d 491, 494 (Ind.App. 1979) (applicant for health facility administrator's license must make prima facie showing of qualifications). Once he has demonstrated that he has the qualifications listed in section 17-29, the burden "shifts to the agency before whom the application is pending [to] present evidence to the contrary." Appellees Brief at 7. The City further concedes that if the City fails to present sufficient contrary evidence the controller must issue the license.

Two of appellant's contentions remain after the City's concessions. First, Chulchian argues that the provision for a trial de novo in which the City is free to assert new grounds to support its decision is improper. We disagree.

The Board conducts its proceedings pursuant to the Indiana Administrative Adjudication and Court Review Act. Code of Indianapolis § 17-38(c). Indiana law provides that a hearing by a full administrative board governed by that Act may be de novo. Indiana cases have determined that the procedure comports with due process because the parties are afforded notice and an opportunity to prepare. Warren v. Indiana Telephone Co., 217 Ind. 93, 26 N.E.2d 399, 409 (1940).

Finally, we reject Chulchian's assertion that no standards govern the decision of the License Review Board. The Board must follow the requirements in the Licensing Ordinance. The Chairman of the License Review Board testified that the Board also refers to applicable Indiana law and court decisions in making a judgment. we conclude that on their face, the procedures of the License Review Board comport with due process. Any charge that the Board has acted arbitrarily or otherwise in violation of appellant's constitutional rights will have to await action by the Board.

C.

We must now consider the current status of appellant's application. The proceedings on Chulchian's 1979 application were dismissed and further action on his 1980 application was stayed pending our decision. The License Administrator, however, denied Chulchian's 1980 application on the basis of the denial of his 1979 license. Counsel for the City admitted that it denied Chulchian's 1979 license because of violations of the obscene conduct ordinance struck down by Judge Steckler. Contrary to the City's assertion in brief, the judge also invalidated the finding that Chulchian's business was a nuisance since the controller based his determination on community opinion. 477 F. Supp. at 132. Judge Steckler was assured that there were other valid arrests sufficient to justify denial. But because the 1979 proceedings were dismissed, the License Review Board never had the, opportunity to consider whether other arrests justified denial of Chulchian's 1979 license. We must assume therefore that at least for purposes of the 1979 license, the City failed to meet its burden that Chulchian was not qualified for a license. The 1979 license was therefore wrongfully withheld, and it is not permissible to base a further denial on the 1979 proceedings.

We cannot order the City to issue a license because the administrative process is not complete. See Indiana State Bd. of Registration v. Cummings, 387 N.E.2d at 497. We note, however, that the License Administrator also denied Chulchian's 1980 application because he "conducted [his] business and premises in such a manner as to create a nuisance to the public" in violation of section 17-6(2). While we have grave reservations about its validity on vagueness and overbreadth grounds, see generally, Rendleman, Civilizing Pornography: The Case For an Exclusive Obscenity Nuisance Statute, 44 U.Chi.L.Rev. 509 (1977), the lower court did not rule on the section's constitutionality. We therefore do not consider it here.

We affirm the order of the district court.

General qualifications of licensees.

In order to obtain any license required by this Code or other city ordinance, the applicant shall meet the following requirements:

(1) The applicant must be a citizen of the United States or a declarant for citizenship, as prescribed by law;

(2) The applicant must not have had any license to operate a business revoked or suspended because of his conduct of the business or because of his violation of any law or regulation while conducting that business;

(3) The applicant, must agree to comply with all laws, provisions of this Code and other ordinances, all regulations promulgated thereunder and the orders and decisions of all public officials which pertain to his business or premises; he shall also agree that his business and premises will not be used for any unlawful or immoral purposes;

(4) Each corporation must be organized and controlled by the laws of the state or be authorized and qualified by its laws to engage in business in the state.