Oral Copulation With a Minor Under 18 – PC 288a(b)(1)

An accusation of oral copulation with a minor can put your freedom, reputation, career, and future at risk. Under California Penal Code § 287(b)(1), formerly § 288a(b)(1), a person accused of oral copulation with someone under 18 may face misdemeanor or felony charges, incarceration, and potentially mandatory sex offender registration. When the accused is more than ten years older than the alleged victim, the registration consequences can be especially serious.

Even if the alleged encounter was voluntary, criminal charges may still be filed. However, an accusation does not establish guilt, and defenses may exist when the accused reasonably believed the other person was an adult, the allegations are unreliable, or prosecutors cannot establish the required elements.

The Law Office of Kristine Koo defends individuals accused of serious sex crimes throughout Orange County, California. Attorney Kristine Koo is a former prosecutor and public defender who has tried more than 50 jury trials, including serious sexual offense cases involving potential life sentences.

If detectives have contacted you, a minor’s parent has threatened criminal allegations, or charges have already been filed, early legal representation may help protect your rights and preserve important evidence.

What Is Oral Copulation With a Minor Under California Penal Code § 287(b)(1)?

California Penal Code § 287(b)(1), formerly § 288a(b)(1), criminalizes oral copulation with a person under 18, subject to the statute’s provisions and exceptions.

Oral copulation involves contact between one person’s mouth and another person’s sexual organ or anus. Penetration is not required, and even slight contact may satisfy the legal definition.

Unlike forcible oral copulation, PC 287(b)(1) does not require prosecutors to establish violence, threats, coercion, or lack of consent.

For example, a 29-year-old accused of oral copulation with a 17-year-old may face prosecution even when both individuals describe the encounter as voluntary.

However, prosecutors must still prove that the prohibited conduct occurred and that the other person was legally a minor.

The defense may challenge the allegations, investigate the circumstances, and examine whether a recognized legal defense applies.

What Must Prosecutors Prove for a PC 287(b)(1) Conviction?

Under California’s criminal jury instructions, prosecutors generally must establish beyond a reasonable doubt that the defendant participated in oral copulation with another person and that the other person was under 18 when the conduct occurred.

The prosecution does not have to prove that the accused intended to violate the law or knew the other person’s actual age as a separate element.

Nevertheless, an actual and reasonable good-faith belief that the other person was at least 18 may provide a defense.

Evidence may include electronic communications, witness testimony, identification documents, photographs, statements to investigators, and the circumstances surrounding the alleged encounter.

A criminal defense attorney can examine whether the prosecution’s evidence establishes actual sexual conduct rather than merely a relationship, conversation, or allegation.

Why Does a Ten-Year Age Difference Matter in an Oral Copulation Case?

The age difference between the accused and the alleged victim can substantially affect the consequences of a PC 287(b)(1) conviction.

Under Penal Code § 290, convictions for certain oral copulation offenses require sex offender registration. However, California provides a specific exception for qualifying convictions under PC 287(b) when the accused was not more than ten years older than the minor and the conviction is the person’s only registration-triggering conviction.

When the accused was more than ten years older, this exception generally does not apply.

For example, a 30-year-old convicted of oral copulation with a 17-year-old may face mandatory registration even when the offense is prosecuted as a misdemeanor.

The exact age difference must be determined using dates of birth, not rounded ages.

Importantly, the ten-year difference is not itself an element of PC 287(b)(1). It is particularly relevant to registration and must not be confused with the separate requirements of PC 287(c)(1).

Criminal Penalties for Oral Copulation With a Minor Under PC 287(b)(1)

PC 287(b)(1) is a California wobbler, meaning the offense may be prosecuted as either a misdemeanor or felony.

Misdemeanor PC 287(b)(1) Penalties

A misdemeanor conviction may result in up to one year in county jail, fines, probation, counseling, and other court-imposed conditions.

Probation may include restrictions on contact with the alleged victim and requirements tailored to the offense.

Even without a lengthy jail sentence, a misdemeanor conviction can affect professional licensing, employment, educational opportunities, and personal relationships.

Sex offender registration may also be required depending on the age difference and applicable law.

Felony PC 287(b)(1) Penalties

A felony conviction may result in 16 months, two years, or three years in state prison.

Additional consequences can include fines, supervision, and mandatory sex offender registration when applicable.

The sentencing outcome depends on the defendant’s criminal history, the evidence, and the circumstances of the case.

A conviction under PC 287(b)(1) does not automatically qualify as a strike under California’s Three Strikes Law. However, more serious related sex crime charges may carry strike consequences.

A defense attorney should examine both the charged offense and any additional allegations before evaluating sentencing exposure.

Will I Have to Register as a Sex Offender for PC 287(b)(1)?

Sex offender registration is often one of the most serious consequences of an oral copulation conviction involving a minor.

California Penal Code § 290 generally requires registration for qualifying convictions under PC 287(b).

The statute provides an exception when the accused was not more than ten years older than the minor and the conviction is the person’s only offense requiring registration.

When the age difference exceeds ten years, this exception is unavailable, and mandatory registration generally applies.

California’s tiered registration system establishes minimum registration periods that may be ten years, twenty years, or lifetime, depending on the offense and applicable classification.

Registration can affect housing, employment, professional licensing, travel, and personal relationships.

Penal Code § 290.5 permits eligible registrants to petition for termination after satisfying applicable requirements. Relief is not automatic.

In certain circumstances, Penal Code § 290.006 may authorize discretionary registration when statutory findings are made.

A misdemeanor plea does not necessarily eliminate sex offender registration. The registration consequences should be evaluated before accepting any negotiated disposition.

What If the Minor Lied About Their Age?

One important defense in California oral copulation cases involves an actual and reasonable mistake about the other person’s age.

A person may meet someone through a dating application, social media, or a social gathering and believe the individual is an adult.

The other person may have represented themselves as being over 18, provided inaccurate information, or used identification indicating an adult age.

California law recognizes that an actual and reasonable good-faith belief that the other person was at least 18 may provide a defense to a PC 287(b)(1) allegation.

However, simply claiming that the minor lied is not automatically sufficient.

The defense must evaluate whether the accused genuinely held that belief and whether it was reasonable under the circumstances.

Relevant evidence may include dating profiles, messages discussing age, identification documents, photographs, witness observations, and statements made before the alleged encounter.

An experienced defense attorney can investigate these circumstances and determine whether the evidence supports presenting a mistake-of-age defense.

Other Legal Defenses Against PC 287(b)(1) Charges

False Accusations or Unreliable Testimony

Some cases arise following relationship disputes, parental intervention, or conflicting accounts of events.

A defense attorney may examine inconsistent statements, disputed timelines, credibility concerns, and evidence that contradicts the accusation.

Insufficient Evidence of Oral Copulation

The prosecution must prove the alleged sexual act occurred.

Romantic messages, sexually explicit conversations, or evidence that two people spent time together do not necessarily establish oral copulation.

The defense can challenge unsupported conclusions and identify reasonable doubt.

Constitutional Violations and Improper Searches

Investigators may seek access to phones, computers, social media accounts, or private communications.

When evidence is obtained through an unconstitutional search, the defense may pursue suppression under Penal Code § 1538.5.

The availability of suppression depends on the facts and applicable constitutional rules.

Can an Orange County Criminal Defense Lawyer Help Before Charges Are Filed?

An oral copulation investigation does not always begin with an arrest.

Police may first receive a complaint from a parent, school official, alleged victim, or another individual. Detectives may then attempt to interview the accused, collect electronic communications, or obtain evidence through search warrants.

During this pre-filing period, an attorney may evaluate the allegations, preserve favorable evidence, communicate with investigators when appropriate, and determine whether presenting information to prosecutors serves the client’s interests.

Pre-filing representation can also help protect against unnecessary statements that could later be used by the prosecution.

Attorney Kristine Koo’s former prosecutor experience provides insight into how charging decisions are evaluated and what evidence prosecutors may consider important.

Although no attorney can guarantee that charges will be avoided, early intervention may provide opportunities that become more difficult after formal prosecution begins.

Common Situations Leading to Oral Copulation Investigations in Orange County

Some investigations involve relationships between older adults and teenagers. Others begin when parents discover communications, dating applications reveal disputed ages, or a relationship ends with conflicting allegations.

Police may investigate alleged encounters involving private residences, hotels, social gatherings, or communications arranged through online platforms.

These investigations may involve local police departments, the Orange County Sheriff’s Department, and prosecutors from the Orange County District Attorney’s Office.

Digital evidence frequently plays an important role, particularly when investigators seek to establish the alleged participants’ ages, communications, and relationship history.

Preserving potentially favorable evidence and obtaining legal advice before participating in an interview can be important steps in preparing a defense.

Additional Criminal Charges That May Arise in an Oral Copulation Investigation

Depending on the alleged conduct and the individuals’ ages, prosecutors may consider related California sex crime statutes.

Penal Code § 287(b)(2) addresses oral copulation involving a person over 21 and a minor under 16. It is a felony offense.

Penal Code § 287(c)(1) applies when the alleged victim is under 14 and more than ten years younger than the accused. The prescribed state prison sentence is three, six, or eight years.

Penal Code § 287(c)(2) addresses oral copulation accomplished through force, violence, duress, menace, or fear, with sentencing consequences depending on the statutory circumstances.

Penal Code § 288(a) criminalizes lewd or lascivious acts involving children under 14 when the required intent is established.

Penal Code § 261.5 concerns unlawful sexual intercourse with a minor and may apply when additional sexual conduct is alleged.

Penal Code § 288.3 addresses contacting a minor with the intent to commit specified offenses.

Penal Code § 288.7(b) provides severe penalties, including fifteen years to life, for qualifying oral copulation or sexual penetration offenses involving children age ten or younger.

Each offense has separate elements and penalties. The existence of a PC 287(b)(1) allegation does not automatically establish any additional crime.

Can PC 287(b)(1) Charges Be Reduced or Dismissed?

A PC 287(b)(1) case may be dismissed, reduced, resolved through negotiations, or contested at trial depending on the evidence and applicable law.

The defense may challenge witness credibility, investigate an actual and reasonable mistake of age, seek suppression of unlawfully obtained evidence, or demonstrate weaknesses in the prosecution’s allegations.

When appropriate, defense counsel may negotiate for reduced charges or a resolution that limits incarceration and other consequences.

However, a reduction from a felony to a misdemeanor under the same statute does not necessarily eliminate mandatory sex offender registration.

The potential effect on registration, immigration status, employment, and professional licensing should be considered before entering a plea.

Why Hire Kristine Koo for an Orange County Oral Copulation Case?

Sex crime cases involving minors require careful preparation, knowledge of California criminal law, and the ability to challenge sensitive testimony and complicated evidence.

Attorney Kristine Koo has worked as a prosecutor and public defender and has tried more than 50 jury trials, including serious sexual offense cases involving potential life sentences.

Her prosecution background provides insight into how the government evaluates allegations, prepares witnesses, and presents evidence.

Her criminal defense experience includes courtroom advocacy, challenging prosecution witnesses, and preparing cases for trial.

The Law Office of Kristine Koo represents clients throughout Orange County, including Newport Beach, Irvine, Anaheim, Santa Ana, Costa Mesa, Huntington Beach, Fullerton, Garden Grove, Orange, and Tustin.

Every case requires an individualized evaluation of the allegations, available evidence, and potential consequences.

Frequently Asked Questions About PC 287(b)(1) in Orange County

Contact an Orange County PC 287(b)(1) Criminal Defense Lawyer

If you are accused of oral copulation with a minor, waiting until formal charges are filed may limit opportunities to preserve evidence and prepare an effective defense.

A conviction can carry incarceration, damage to your reputation, professional consequences, and potentially mandatory sex offender registration.

Attorney Kristine Koo brings former prosecutor experience and extensive criminal jury trial experience to the defense of serious sex crime allegations.

The Law Office of Kristine Koo can evaluate your case, explain the potential consequences, investigate available defenses, and prepare a strategy focused on protecting your rights and future.

Contact the Law Office of Kristine Koo for a confidential consultation about a PC 287(b)(1) investigation or criminal charge in Orange County, California.