If you are looking to get started with a family law matter involving your child, you likely need to establish the father’s paternity before moving forward with the case. In this situation, you may be wondering, “How do you establish paternity in Washington?” Establishing paternity is an important legal step that can affect your child’s future, parental rights, and a parent’s responsibilities.
While paternity is typically automatically presumed when a child is born to married parents, the process can be more complicated if the parents are not married. There are also many ways in which these cases can be resolved, and several different challenges you may encounter, which is why it is a good idea to hire a paternity lawyer early on in a paternity case.
An Overview of Paternity Cases in Washington
Establishing paternity involves creating an official legal relationship between a father and their child. A husband is presumed to be the father when a child is born to married parents. If the parents are unmarried, paternity must be legally established.
From 2020 to 2025, 208,790 babies were born in Washington. Of all births, 40% are to unmarried women. This means approximately 40% of children may need their father to legally establish paternity before obtaining the legal rights and responsibilities that fatherhood brings.
In 2025, there were 1,706 parentage cases filed in Washington. These cases are handled through the Superior Court. In Benton County, for example, these cases are handled at the Benton County Justice Center at 7122 W. Okanogan Pl, Kennewick.
Why Establishing Paternity Is Important
Without legal paternity, a biological father does not have parental rights and is not responsible for providing for their child. Before they can be treated as a parent by the court, they must first establish paternity. Both mothers and fathers have the ability to file for paternity. Some reasons to establish paternity, whether you are the mother or father, include:
- Child support. Both parents have a legal obligation to financially support their child. Establishing paternity allows a child support case to be filed, allowing a child to receive financial support from both parents.
- Child custody and parenting plans. With paternity established, a father may be able to have custody of their child, but it is important to understand the rules if you ever need to move with your child while sharing custody. Depending on what is in the child’s best interests, the father may be able to have parenting time with their child.
- Visitation rights. Visitation is another parental right and is often included in a parenting plan where one parent does not have physical custody of the child. As a father, these visitations can be an important step in spending time with your child and developing a closer personal bond.
- Inheritance benefits. Establishing paternity can protect a child’s ability to receive property in the event that the father passes away. This can simplify the probate process, compared to if a parent passes away without a will and without legally recognized children.
- Medical benefits. In some cases, having a paternity allows a child to benefit from the healthcare insurance coverage of one parent. It may also allow them to access information about their family medical history.
- Stronger personal bond. Sometimes, establishing paternity is a way to legally recognize an existing family tie or a first step in building a relationship.
The reasons to establish paternity are often deeply personal and involve unique factors. If you hire a paternity lawyer, they can explain how establishing paternity could impact your family and what benefits it may bring.
How Paternity May Be Established in Washington
Under Washington’s paternity laws, there are several ways in which paternity may be established. A Washington paternity attorney can explain what method is right for your case, depending on the circumstances of the case and any court orders and court proceedings.
One of the most common methods of establishing paternity is using a voluntary acknowledgment of parentage. This involves both parents voluntarily acknowledging parentage. They are used when both parents agree on paternity, and are often done soon after the birth.
However, in more complex cases, it is common for a paternity case to go to court. Court involvement may be necessary if you are facing challenges such as disputed paternity, if one parent refuses to cooperate with a case, or if there are any complex factors regarding paternity. Sometimes, the court orders DNA testing to determine biological parentage.
Challenging Paternity in Washington
Sometimes, a paternity case is filed against someone who is not the biological father. If you are in this situation, you may be feeling overwhelmed and unsure of what to do next. However, you do have the ability to challenge paternity.
If someone filed a paternity case against you, it is important to act quickly to protect your rights. In this situation, reach out to a paternity attorney in Washington as soon as possible. A lawyer can help you take the right steps to challenge a paternity case, including by analyzing the evidence against you and presenting exonerating evidence that provides clarity on whether or not you are the biological father.
Why You Should Hire a Paternity Lawyer
While many parentage matters can be resolved between co-parents, this is not always the case. Many paternity cases involve significant disputes or legal complexities that make it not as straightforward as simply signing an agreement or taking a DNA test. For this reason, it is essential to work with a Washington paternity lawyer.
A lawyer can gather and analyze evidence to support your case. They can also help you meet important deadlines and procedural requirements, which can reduce the risk of costly mistakes.
Learn How a Tri-Cities, Washington Paternity Attorney From Chvatal King Cantu Law Can Help
Chvatal King Cantu Law is a dedicated family law firm that has been helping families through difficult paternity cases since 1975. Attorney Pat Chvatal has over 35 years of legal experience, during which she has gained a deep understanding of Washington’s paternity laws and how to handle conflict and complexity in these cases. When you need compassionate representation, our paternity lawyers are here.
If you have questions about how to establish paternity, contact Chvatal King Cantu Law today. We offer attorney-led case consultations to help you understand your legal rights and what your options are moving forward.
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