Business Law

Our Firm advises and represents companies and individuals with a broad range of business related services. We advise our clients relating to the formation of an entity, contracts for goods and services, real property acquisition and sale, leases, personnel with buying or selling a business and other business law.

Entity selection and business formation, including corporations and limited liability companies

Purchase and Sale of Businesses

Commercial and residential real estate

Mergers and acquisitions

Contract drafting, review and negotiation, including

Equipment lease agreements

Buy-sell agreements

Shareholder agreements

Operating agreements

Broker agreements

Distributor agreements

Purchase agreements

Sale agreements

Complex business dispute litigation

Intellectual property

Tax planning

Employment law

Arbitration and mediation

Charitable and non-profit law

Computer and e-commerce law

Environmental Law

Balancing the needs of commerce and industry with protection of the environment is an ongoing challenge and the focus of our robust environmental law practice. We are leaders in environmental, land use and natural resources law through our success in helping clients find that balance and achieve their goals.


Guardianship is the management of affairs of a person who has been judged unable to manage his or her own affairs. Becoming someone’s guardian is a huge responsibility that brings many challenges. The Seattle guardianship attorneys at Aiken, St. Louis & Siljeg examine your case to determine whether establishing legal guardianship is recommended in your situation. A guardian may only be appointed if the court is convinced, after a hearing, that a guardian is needed. People who object to having a guardian are entitled to have their objections considered at a hearing. It is recommended that they hire a Seattle guardianship attorney to represent their interests.

Our Attorneys represent parties in all phases of a guardianship, including Petitioners and alleged incapacitated person in an initial guardianship Petitions, certified Professional and lay guardians in guardianship administration and contested guardianships. If you are concerned about a loved one’s ability to manage his or her own affairs, contact a Seattle guardianship lawyer. The knowledgeable attorneys at Aiken, St. Louis & Siljeg will examine your options and help you determine whether establishing guardianship is the best course of action. We also advise and represent individuals who object to the appointment of a guardian. Call us today at 206 624 2650 to schedule a confidential consultation.

Health care credentialing & licensing

Our attorneys represent licensed healthcare providers throughout the State of Washington before all licensing Boards, Commissions, Secretary Programs and the Department of Health. We focus our practice on representing individuals by assisting them in maintaining not only their license, but their ability to continue to practice their chosen profession. We guide the licensee in responding to investigations, informal and formal discipline and licensure hearings. This includes:

Licensing issues, including all state disciplinary investigations and interstate licensing compliance issues

Corporate practice of medicine

Scope of practice

Physician compensation

Practice formation, ownership and dissolution


Staff privileges

Peer review matters

Medical staff bylaws and rules

Policies (e.g. impaired practitioners and codes of conduct)

Contested medical staff proceedings

National Practitioner Data Bank reporting issues

Immigration & Naturalization law

Immigration law is complex and has substantial consequences if not handled properly.  At Aiken, our attorneys are committed to helping businesses and individuals navigate this complicated immigration system. We possess the knowledge and skill to assist clients in the following areas of immigrations law:


Criminal Matters Involving Immigration Issues

Family Based Immigration

Humanitarian Immigration

Investment Immigration

Non-Immigrant Visas


Insurance Defense

Our experienced insurance defense lawyers are committed to representing clients in the most efficient way possible. We provide consistent and cost-effective legal services to insurers and their insureds. We pursue early resolution of claims when possible and whenever it is in the client’s best interest. If negotiations fail, we provide our clients with an aggressive, thorough, yet cost-effective defense throughout the litigation process, including trial and appeal.
Our insurance defense attorneys handle claims at all stages of litigation, including, pre-suit, alternative dispute resolution, trial, post-trial and appeals in both State and Federal Courts.  In the firm’s representation of insurance companies, attorneys have continually been confronted with complex, yet sometimes novel legal issues associated with coverage questions.  We have represented insurance companies in a wide variety of litigation including, but not limited to, declaratory judgment actions, interpleader actions and coverage matters.  Representation of insureds has included premise claims, personal injury, property damage, death, commercial litigation and professional liability claims.

Litigation & Appeals

The firm has established attorneys with over 30 years of individual experience at both the trial and appellate level. Our attorneys have successfully argued cases on appeal before the Washington appellate and Supreme Courts. The law firm’s familiarity with the history of decisions in the local trial and appellate courts is a distinct advantage in the presentation of cases before the reviewing court.

In addition to the knowledge of the law, a successful appeal requires a detailed analysis of all aspects of the case. We have the resources necessary to manage your case throughout the appellate process. Our attorneys assemble a cost-effective team to respond to all types of cases before the Appellate Courts, including large, document-intensive appeals.

Maritime Admirality law

Aiken, St. Louis & Siljeg, P.S. is available to assist you with your maritime issues from litigation of maritime issues to Coast Guard regulatory and administrative matters.  Our firm is experienced with maritime personal injury matters, Coast Guard drug testing program review, Coast Guard Suspension and Revocation proceedings of marine credentials, and marine
collisions and allisions.

Personal Injury Law

When you have been injured in a car accident or due to another person’s negligence, you need someone who cares about your recovery, both physical and financial.
You can rely on our personal injury lawyers to walk you through the legal system and make sure your best interests are represented.


The death of a loved one can be a challenging time for us all.  The attorneys at Aiken, St. Louis & Siljeg are here to serve you during this time and to assist you with all aspects of estate administration in the most reasonably, efficient and economical manner allowed by law.

There are many estate administration or probate options based on the size of the deceased person’s estate and whether the deceased person owned real property.   Like in many states, Washington State has a simplified probate process for small estates where there is no real property. It also has a simplified adjudication process that can be used in some situations.  It is our job to help you decide which is the best options for the estate at issue.  If the deceased left real property outside of this state, you will likely need to probate in the state where that real property is located.  This is often referred to as an ancillary probate. We can assist you with an ancillary probate here in Washington, or help determine the requirements for ancillary probate in another state.

If you have any questions about probating an estate and the probate process, it would be our pleasure to serve you.  Will you please reach out to us with your questions at 206.624.2650.  We look forward to the opportunity to guide you through process.

Real Estate Law

Our attorneys represent parties in lawsuits, arbitrations and mediations on issues related to breach of contract, fraud, disclosure, misrepresentation, co-ownership, mold, easements, encroachments, title claims, construction defects, commission and escrow disputes, professional negligence including broker and property manager liability, CC&Rs, HOA’s, Bureau of Real Estate matters, landlord and tenant, eviction, foreclosure, financing, insurance, and real estate related matters. We also advises buyers and sellers in residential and commercial sales and purchases, prepare documents, deeds for property, sales or lease, financing, easements and other agreements, and advises buyers, sellers and real estate licensees.

Trusts & Estates Law

Be prepared and provide assurance to those who follow in your footsteps.

Aiken is a firm grounded in its dedication to serving others.  An “estate plan” can include a will, trust, health care directive and power of attorney for health care and for financial matters.  Estate plans are like insurance – something we don’t plan to ever use – but providing peace of mind that your affairs are in order and your loved ones are cared for in the unlikely event of unexpected incapacity, disability, disease or death.  The attorneys at Aiken, St. Louis & Siljeg, are focused on providing you with individualized plans that meet your personal needs.  If you have any questions about your current estate plans or you think you need a will or a trust, please reach our to any of our estate planning attorneys at 206.624.2650.  Our goal is to listen to you and to help you create a plan that meets your needs and desires.

Do you have minor children?

If you have minor children, a will and durable power of attorney is so important to ensure that your minor children are cared for by the person(s) that you choose in the event of your death or incapacity. 

In a committed relationship?

If you have not gotten married or registered your domestic partner for personal reasons but would like to ensure that someone you love is provided for, there is no better way than to include that person in your will and trust.  If left to the laws of intestacy, your unmarried partner (or non registered domestic partner) will not receive any portion of your estate.


Revocable Living Trusts

Irrevocable Living Trusts

Testamentary Trusts

Living Wills

Durable Powers of Attorney for Health Care and Finances

Property Trusts for Real Property Situated Outside the State of Washington

Community Property Agreements & Property Status Agreements

Family LLC’s or Limited Partnerships

Special Needs Trusts