At the heart of our practice are the people who guide it - experienced attorneys dedicated to protecting your ideas, building your business, and providing clarity in complex legal terrain.
We’re more than just legal advisors - we’re long-term partners in your creative and commercial journey. Our attorneys bring deep knowledge, practical insight, and a genuine commitment to each client relationship.
Meet the team behind the strategy, the advocacy, and the results.
Kate Sullivan
Founding Attorney | Intellectual Property & Brand Strategy
Kate Sullivan is a trusted advisor to creators, founders, and forward-thinking businesses, helping them protect what they’ve built and grow with confidence. With a background in intellectual property law and a sharp focus on brand strategy, Kate combines legal precision with business-savvy counsel tailored to each client’s goals.
She has guided clients through trademark registration, copyright protection, and licensing deals — as well as complex disputes that require strategic resolution. Whether she’s helping a startup launch its first product or advising an established brand on global IP issues, Kate brings clarity, responsiveness, and practical insight to every matter.
Kate is known not just for her legal acumen, but for how deeply she invests in the success of her clients. Her approach is collaborative, grounded, and solutions-driven. She is especially passionate about reducing barriers to building and growing a business — offering guidance that empowers clients to move forward with purpose and protection.
“The law should never be a barrier to creativity — it should be a foundation. I’m here to make sure your vision is protected, respected, and able to grow.”
Outside of practice, Kate contributes to policy and education efforts that support business owners in their ability to grow and scale — with a particular focus on women-led ventures and creative industries. She also enjoys riding horses, tending her garden, and fitting in a fun round of golf when time allows.
Jansen Luke Rigney
Attorney | Trademarks, Brand Protection & IP Strategy
Jansen Rigney helps founders and business owners turn their names, logos, and creative work into protected business assets - offering clear, practical guidance at the intersection of trademarks, brand protection, and intellectual property strategy.
Based in Oklahoma, Jansen works with startups, small businesses, and growing companies that want to level up without leaving their legal foundations behind. He brings a sharp systems mindset and a steady, strategic approach to building and defending brand rights.
Before IP law, Jansen’s path led through criminal and family law, public defense, and the district attorney’s office. His early legal career - shaped by courtroom work and high-stress advocacy - taught him how to explain risk clearly and advocate when it matters most. Now, he brings that same clarity and tenacity to the world of intellectual property, especially when disputes or brand conflicts arise.
With a background in science and operations, Jansen holds a B.S. in Biology with minors in Chemistry and Psychology. He previously worked in microbiology labs and as a materials lead in aerospace engineering - responsible for the compliance and quality of highly regulated components. That experience instilled the precision and foresight that now define his legal practice: detail-oriented, system-aware, and always thinking a few steps ahead.
He also spent years managing restaurants, which gave him a lasting respect for small business owners - the long hours, tight margins, and the reality that reputation is often a company’s most valuable asset. That perspective fuels his passion for IP law: helping protect the identity and story behind a business, so it can grow with confidence.
“I want my clients to walk away with clarity - not just about the law, but about their options, their risks, and their power to move forward on solid ground.”
Outside of work, Jansen enjoys time with his family, duck hunting, early mornings in the outdoors, and the kind of quiet focus that calls for patience and attention to detail - qualities that show up just as much in his legal practice.
Speaking Engagements & Workshops
Intellectual property can be a complex body of law. There is a lot of information out there in the world and many can get lost or overwhelmed when they go down the rabbit hole.
Kate spends a portion of her time conducting speaking engagements and workshops focusing on explaining intellectual property protections. She believes that education on these protections is vital to invention and innovation for inventors and business owners.
Contact Kate if you are interested in having her come and speak.
Price Range: Varies
Let's Work Together
If you have an idea or legal question for your business, get in contact with Black Dog Law today! When it comes to quality legal services, we are the first you should call. We look forward to hearing from you.
Black Dog Law PLLC
Affiliation: United States Patent and Trademark Office
12 N Cheyenne Ave
Tulsa OK 74103
Phone: 918-231-2546